select,input{font-size:inherit;font-family:inherit;}.wa-button:active,.wa-button:visited,.wa-button{border:1px solid #c0c0c0;background:red;color:#fe6518;border-radius:8px;-moz-border-radius:8px;display:inline-block;background:#fafafa;background:-moz-linear-gradient(top,#fafafa 0,#ececec 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#fafafa),color-stop(100%,#ececec));background:-webkit-linear-gradient(top,#fafafa 0,#ececec 100%);/ background:-o-linear-gradient(top,#fafafa 0,#ececec 100%);background:-ms-linear-gradient(top,#fafafa 0,#ececec 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fafafa',endColorstr='#ececec',GradientType=0);background:linear-gradient(top,#fafafa 0,#ececec 100%);font-family:Arial;text-align:center;line-height:15px;font-weight:normal;font-size:11px;padding:.5em 1.8em .4em;font-size:12px;text-shadow:0 1px 1px rgba(0,0,0,.3);-webkit-box-shadow:0 1px 2px rgba(0,0,0,.2);-moz-box-shadow:0 1px 2px rgba(0,0,0,.2);box-shadow:0 1px 2px rgba(0,0,0,.2);border:1px solid #d3d3d3;color:#fe6518!important;border-radius:5px;display:inline-block;font-family:Arial;font-size:11px;font-weight:bold;line-height:15px;text-align:center;text-shadow:0 2px 2px rgba(255,255,255,0.4);text-decoration:none;}input.wa-button:active,input.wa-button{padding:.2em .75em .275em;}.wa-button-disabled:active{color:gray;}.wa-button-disabled{color:gray;margin-top:10px;text-shadow:0 1px 2px #ECECEC;}.wa-button span{display:inline;}.wa-button:hover,.wa-button.hover{background:#f6f6f6;background:-moz-linear-gradient(top,#f6f6f6 0,#dedede 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#f6f6f6),color-stop(100%,#dedede));background:-webkit-linear-gradient(top,#f6f6f6 0,#dedede 100%);/ background:-o-linear-gradient(top,#f6f6f6 0,#dedede 100%);background:-ms-linear-gradient(top,#f6f6f6 0,#dedede 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f6f6f6',endColorstr='#dedede',GradientType=0);background:linear-gradient(top,#f6f6f6 0,#dedede 100%);}.bubblebtn:link,.bubblebtn:active,.bubblebtn:visited,.bubblebtn{background:#f78d1d;background:-moz-linear-gradient(center top,#FAA51A,#F47A20) repeat scroll 0 0 transparent;background:-webkit-gradient(linear,left top,left bottom,from(#FAA51A),to(#F47A20));filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#FAA51A',endColorstr='#F47A20');border:1px solid #da7c0c;border-radius:8px;-moz-border-radius:8px;display:inline-block;text-align:center;vertical-align:top;cursor:pointer;position:relative;line-height:15px;text-shadow:0 1px 1px rgba(0,0,0,.3);-webkit-box-shadow:0 1px 2px rgba(0,0,0,.2);-moz-box-shadow:0 1px 2px rgba(0,0,0,.2);box-shadow:0 1px 2px rgba(0,0,0,.2);color:#FFF!important;text-shadow:0 1px 1px rgba(0,0,0,.2);font-family:Arial,Helvetica,sans-serif;font-weight:normal;text-shadow:0 1px 1px rgba(0,0,0,0.2);border-radius:3px;padding:.5em 1.8em .4em;font-size:12px;}.bubblebtn:active{background:#fcd3a5;background:-moz-linear-gradient(center top,#f47a20,#faa51a) repeat scroll 0 0 transparent;background:-webkit-gradient(linear,left top,left bottom,from(#f47a20),to(#faa51a));filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f47a20',endColorstr='#faa51a');color:#fcd3a5;}.bubblebtn.hover,.bubblebtn:hover{color:#fff;background:#f47c20;background:-moz-linear-gradient(center top,#f88e11,#f06015) repeat scroll 0 0 transparent;background:-webkit-gradient(linear,left top,left bottom,from(#f88e11),to(#f06015));filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f88e11',endColorstr='#f06015');text-shadow:0 1px 1px rgba(0,0,0,0.2);}.wa-button.sm-btn,.bubblebtn.sm-btn{font-size:11px;padding:.2em 1em .275em;}.wa-button.md-btn,.bubblebtn.md-btn{font-size:12px;padding:.4em 1.5em .42em;}.wa-button.lg-btn,.bubblebtn.lg-btn{font-size:14px;padding:.5em 2em .55em;}.wa-button.giant-btn,.bubblebtn.giant-btn{font-size:15px;font-weight:bold;padding:9px 35px;}.bubblebtn.giant-btn{text-shadow:-1px 2px 1px rgba(190,101,8,0.8);box-shadow:0 0 7px #d2d2d2;}.wa-button.disabled,.wa-button.disabled:link,.wa-button.disabled:visited,.wa-button.disabled:active,.wa-button.disabled:hover,.bubblebtn.disabled,.bubblebtn.disabled:link,.bubblebtn.disabled:visited,.bubblebtn.disabled:active,.bubblebtn.disabled:hover{color:#b3b3b3!important;text-shadow:0 1px 1px rgba(255,255,255,0.3);background:#fafafa;background:-moz-linear-gradient(top,#fafafa 0,#ececec 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#fafafa),color-stop(100%,#ececec));background:-webkit-linear-gradient(top,#fafafa 0,#ececec 100%);/ background:-o-linear-gradient(top,#fafafa 0,#ececec 100%);background:-ms-linear-gradient(top,#fafafa 0,#ececec 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fafafa',endColorstr='#ececec',GradientType=0);background:linear-gradient(top,#fafafa 0,#ececec 100%);border-color:#d3d3d3;cursor:default;}.facebook-btn{margin:15px auto;display:block;position:relative;border-radius:8px;text-align:center;height:50px;width:220px;color:white;font:normal normal bold 17px/50px arial;text-shadow:0 1px 2px #083471;-webkit-box-shadow:0 0 4px #6d8bb7;-moz-box-shadow:0 0 4px #6d8bb7;box-shadow:0 0 4px #6d8bb7;background:#9fc1e7;background:-moz-linear-gradient(top,rgba(159,193,231,1) 0,rgba(90,143,216,1) 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,rgba(159,193,231,1)),color-stop(100%,rgba(90,143,216,1)));background:-webkit-linear-gradient(top,rgba(159,193,231,1) 0,rgba(90,143,216,1) 100%);background:-o-linear-gradient(top,rgba(159,193,231,1) 0,rgba(90,143,216,1) 100%);background:-ms-linear-gradient(top,rgba(159,193,231,1) 0,rgba(90,143,216,1) 100%);background:linear-gradient(to bottom,rgba(159,193,231,1) 0,rgba(90,143,216,1) 100%);border:1px solid #4c6da9;padding:0 25px 0 35px;cursor:pointer;}.facebook-btn:hover{background:#83abd8;background:-moz-linear-gradient(top,rgba(131,171,216,1) 0,rgba(48,96,163,1) 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,rgba(131,171,216,1)),color-stop(100%,rgba(48,96,163,1)));background:-webkit-linear-gradient(top,rgba(131,171,216,1) 0,rgba(48,96,163,1) 100%);background:-o-linear-gradient(top,rgba(131,171,216,1) 0,rgba(48,96,163,1) 100%);background:-ms-linear-gradient(top,rgba(131,171,216,1) 0,rgba(48,96,163,1) 100%);background:linear-gradient(to bottom,rgba(131,171,216,1) 0,rgba(48,96,163,1) 100%);}.facebook-btn .icon{display:block;background:transparent url(https://web-archive.nli.org.il/National_Library/20160330061658oe_/http://www.devel.wolframcdn.com/images/facebook/fb_icon_analyze.png) no-repeat scroll 0 0;width:30px;height:30px;position:absolute;left:55px;top:10px;}.facebook-btn.narrow{width:120px;}.facebook-btn.narrow .icon{left:10px;}.facebook-btn.ra{font-size:14px;height:45px;line-height:45px;padding:0 10px 0 35px;}.facebook-btn.ra .icon{left:11px;top:8px;}.wa-dropdown{border:2px solid #b7d3de;-moz-border-radius:3px;border-radius:4px;display:inline-block;height:15px;color:#678e9c;font:11px Arial;line-height:15px;padding:0 16px 1px 4px;text-decoration:none;text-indent:0;top:-1px;white-space:nowrap;z-index:301;}.wa-dropdown:hover{background-color:#678e9c;border-bottom-left-radius:0;border-bottom-right-radius:0;border-color:#678e9c;color:#FFF;}.wa-dropdown>a:after{content:"▼";display:block;font-size:9px;position:absolute;right:4px;top:1px;transform:scale(1.5,1);}.wa-dropdown:hover>.wa-dropdown-option{background:transparent;}.wa-dropdown .wa-dropdown-option{-moz-border-radius:3px;border-radius:3px;background:white;padding:0 3px;z-index:15;outline:none;}.wa-dropdown:hover>.wa-dropdown-option{color:#fff;background-color:transparent;}.wa-dropdown-options{padding-top:0;display:none;position:absolute;background:white;border:1px solid #c0c0c0;font-size:10px;font-family:Verdana,Tahoma;z-index:1;outline:none;}.wa-dropdown-options .wa-dropdown-option{display:block;padding:7px 3px 2px 3px;line-height:16px;white-space:nowrap;outline:none;}.wa-dropdown-options .wa-dropdown-option:hover{text-decoration:underline;}.tipbubble-simple{position:absolute;display:none;z-index:5;background:white;border:1px solid #dbdbdb;padding:6px;-moz-border-radius:4px;border-radius:4px;margin-top:15px;-moz-box-shadow:0 0 5px #ccc;box-shadow:0 0 5px #ccc;font-size:11px;color:#777;text-align:center;z-index:5000;}.signin-tipbubble,.did-you-know-tipbubble{display:none;background:#fff;background:-moz-linear-gradient(top,#fff 0,#fff2d5 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#fff),color-stop(100%,#fff2d5));background:-webkit-linear-gradient(top,#fff 0,#fff2d5 100%);background:-o-linear-gradient(top,#fff 0,#fff2d5 100%);background:-ms-linear-gradient(top,#fff 0,#fff2d5 100%);background:linear-gradient(to bottom,#fff 0,#fff2d5 100%);border:1px solid #d7d5ce;color:#666;padding:6px;-moz-border-radius:9px;border-radius:9px;-moz-box-shadow:0 0 15px #bbb;box-shadow:0 0 15px #bbb;font-size:12px;max-width:260px;padding:20px;z-index:300;position:absolute;line-height:normal;}.did-you-know-tipbubble{top:36px;right:-33px;}.signin-tipbubble{right:0;margin:6px;}.did-you-know-image{margin-bottom:4px;width:118px;height:20px;background-image:url(data:image/png;base64,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);}.sign-in-free-image{margin-bottom:4px;width:136px;height:24px;background-image:url(data:image/png;base64,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);}.personalize-wa-exp-image{margin-bottom:10px;width:255px;height:44px;background-image:url(data:image/png;base64,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);}.tipbubble-simple .arrow,#unavailableFormat .arrow{background:url("/National_Library/20160330061658oe_/http://www.wolframalpha.com/images/pro/uparrow.png") no-repeat scroll center bottom transparent;position:absolute;height:13px;width:18px;top:-13px;left:50%;margin-left:-9px;display:block;}#dyn-fav-signin{padding:.5em 1.8em .4em;font-size:12px;margin:12px 0;}#dont-show-dyn{vertical-align:initial;margin-right:5px;}.tip-bubble-arrow{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAANCAYAAACzbK7QAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyNpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuNS1jMDE0IDc5LjE1MTQ4MSwgMjAxMy8wMy8xMy0xMjowOToxNSAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENDIChNYWNpbnRvc2gpIiB4bXBNTTpJbnN0YW5jZUlEPSJ4bXAuaWlkOjI2QUIwNEQ4NTlFODExRTNCMTU2ODgyM0I0OTc0QjA0IiB4bXBNTTpEb2N1bWVudElEPSJ4bXAuZGlkOjI2QUIwNEQ5NTlFODExRTNCMTU2ODgyM0I0OTc0QjA0Ij4gPHhtcE1NOkRlcml2ZWRGcm9tIHN0UmVmOmluc3RhbmNlSUQ9InhtcC5paWQ6MjZBQjA0RDY1OUU4MTFFM0IxNTY4ODIzQjQ5NzRCMDQiIHN0UmVmOmRvY3VtZW50SUQ9InhtcC5kaWQ6MjZBQjA0RDc1OUU4MTFFM0IxNTY4ODIzQjQ5NzRCMDQiLz4gPC9yZGY6RGVzY3JpcHRpb24+IDwvcmRmOlJERj4gPC94OnhtcG1ldGE+IDw/eHBhY2tldCBlbmQ9InIiPz4d9AFrAAAAwUlEQVR42qzSSw6CMBCA4TIpFxClFA/h4w5uvRLcq9zAlZ7AhYbUhVfAsU6bYKppKU0mPAL/Fxqyy/nEIlaDc8Q54DxDXoCYeFGs2rKUezxXOIs5gU9c1ExUa0ZIF4JATJzz3NwgZEdIkQJQXGKc4+XgRlS1RdQ/BMLiufeBEASmxj2Id7sgJf6FbH0IpMZ/IEsfMDk+QoRBlEUs0KbGHSIcYr6EU7wZ/4osEZHvw+ah+y67364D7h3F511a9+wlwABxmDMUU2EtDQAAAABJRU5ErkJggg==);position:absolute;height:13px;width:24px;top:-13px;right:42px;display:block;}.did-you-know-tipbubble .tip-bubble-arrow{right:67px;}.popover-close{color:#999!important;cursor:pointer;font-size:13px;height:23px;margin:4px 8px;position:absolute;right:0;top:0;}.lightbox{border:1px solid #bbb;display:none;position:absolute;z-index:500;}.lightbox .lightbox-head-gradient{background:#f8f8f8;border-bottom:1px solid #dcdcdc;-moz-border-radius:8px 8px 0 0;border-radius:8px 8px 0 0;height:80px;position:relative;}.lightbox .lightbox-head-text{color:#E76901;font-size:25px;line-height:30px;padding-bottom:5px;padding-left:25px;padding-top:26px;vertical-align:middle;}.lightbox .lightbox-mid{padding:10px 25px;}.lightbox-shadows{box-shadow:0 0 14px #777;-moz-box-shadow:0 0 14px #777;border:1px solid #aaa;}.lightbox-shadows-light{box-shadow:0 0 14px #ddd;-moz-box-shadow:0 0 14px #ddd;border:1px solid #aaa;}.lightbox-rounded{border-radius:8px;-moz-border-radius:8px;}.lightbox-roundedbottom{border-radius:0 0 8px 8px;-moz-border-radius:0 0 8px 8px;}.lightbox-roundedtop{border-radius:8px 8px 0 0;-moz-border-radius:8px 8px 0 0;}#lightbox-loading{border-radius:10px;-moz-border-radius:10px;box-shadow:0 0 7px #aaa;-moz-box-shadow:0 0 7px #aaa;width:200px;height:20px;position:fixed;top:50%;left:50%;margin-left:-120px;margin-top:-30px;z-index:303;border:1px solid #ccc;text-align:center;padding:70px 20px 20px 20px;font-weight:bold;color:#666;font-size:12px;background:url(/National_Library/20160330061658oe_/http://www.wolframalpha.com/images/computing.gif) no-repeat center 25px white;}.lightbox-msg{background-color:white;border-radius:8px 8px 8px 8px;display:block;left:50%;line-height:normal;margin-left:-285px;width:570px;}.lightbox-msg .lightbox-msg-top{background:#f8f8f8;border-bottom:1px solid #D8D8D8;border-radius:8px 8px 0 0;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#efefef',GradientType=0);padding:26px 0 14px 30px;}.lightbox-msg .lightbox-msg-top h3{color:#f77445;font-size:25px;font-weight:500;margin-bottom:10px;text-shadow:#ddd 2px 2px 2px;}.lightbox-msg .lightbox-msg-mid{color:#666;padding:15px 30px;}.lightbox-msg .lightbox-msg-mid>p{color:#666;font-size:15px;margin-bottom:40px;margin-top:20px;font-weight:normal;line-height:20px;}.lightbox-msg .lightbox-msg-mid a{color:#FE6518;}a.closebtn,a.close,.lightbox a.close{border-radius:0 8px 0 8px;color:#999;cursor:pointer;font-size:11px;height:21px;line-height:19px;outline:medium none;position:absolute;right:0;text-align:center;top:0;width:22px;text-transform:lowercase;z-index:1;}a.closebtn:hover,a.close:hover,.lightbox a.close:hover{color:#777;}span.student-hat{background:url("/National_Library/20160330061658oe_/http://www.wolframalpha.com/images/pro/student.png") no-repeat scroll 0 0 rgba(0,0,0,0);display:inline-block;font-size:11px;padding-left:23px;position:relative;}#trial-reminder{background-color:white;border-radius:8px 8px 8px 8px;display:block;left:50%;margin-left:-270px;margin-top:-70px;top:50%;width:540px;}#trial-reminder #reminder-top{background:#fff;background:-moz-linear-gradient(top,#fff 0,#fdfdfd 66%,#efefef 100%);background:-ms-linear-gradient(top,#fff 0,#fdfdfd 66%,#efefef 100%);background:-o-linear-gradient(top,#fff 0,#fdfdfd 66%,#efefef 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#fff),color-stop(66%,#fdfdfd),color-stop(100%,#efefef));background:-webkit-linear-gradient(top,#fff 0,#fdfdfd 66%,#efefef 100%);background:linear-gradient(top,#fff 0,#fdfdfd 66%,#efefef 100%);border-bottom:1px solid #D8D8D8;border-radius:8px 8px 0 0;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#efefef',GradientType=0);margin-bottom:5px;padding:17px 0 5px 30px;}#trial-reminder #reminder-mid{padding:10px 30px;}#reminder-top h3{color:#f58120;font-size:24px;font-weight:500;margin-bottom:10px;text-shadow:0 0 1px rgba(160,84,21,0.35);}#trial-reminder #reminder-mid>p{margin-bottom:10px;}#trial-reminder a.bubblebtn.giant-btn{font-weight:bold;margin-right:5px;}#trial-reminder span.small-text{color:#787878;font-size:11px;line-height:30px;margin:0 20px 10px 0;}.lightbox-subhead{padding:0 0 10px 27px;font-weight:900;color:#666;}#sbs-ad-popup{display:none;top:75px;font-size:13px;margin-left:-450px;width:930px;background-color:#fff;}.sbs-ad-head{font-size:19px;font-weight:900;color:#FE6518;padding-left:9px;}.sbs-signin{float:right;font-size:13px;padding-right:41px;color:#555;text-shadow:none;}.sbs-ad-mid{padding:20px 35px 0 35px;font-family:arial;font-weight:normal;color:#555;border-bottom:solid 1px #dcdcdc;background-color:#fff;border-radius:0 0 8px 8px;}.sbs-ad-mid .mid-left{float:left;width:535px;display:block;border:1px solid #f78d1d;border-radius:8px;margin:3px 27px 0 1px;}.mid-left{position:absolute;height:99%;}.mid-left img#proGraphic,.mid-left div#sbs-example-image{position:absolute;top:0;left:0;}.mid-left img#proGraphic{z-index:10;}#sbs-example-image{width:530px;height:97%;overflow-x:hidden;overflow-y:scroll;}.sbs-example.sbs-hovered:after{content:url('/National_Library/20160330061658oe_/http://www.wolframalpha.com/images/redesign/_equal_button.gif');vertical-align:middle;top:3px;}.sbs-example:after{content:'=';font-size:17px;font-weight:bold;color:#aaa;vertical-align:middle;position:absolute;top:2px;}.sbs-example.large:after{top:10px;}.sbs-example.large .sbs-arrow{top:7px;}.sbs-example .sbs-arrow{width:0;height:0;border-top:10px solid transparent;border-bottom:10px solid transparent;display:none;border-left:10px solid #f78d1d;position:absolute;left:-34px;top:1px;}.sbs-example .sbs-arrow:before{width:0;height:0;content:" ";border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:8px solid #fff;position:absolute;left:-10px;top:-8px;}#sbs-ad-popup #examples{height:auto;position:relative;overflow:auto;overflow-y:hidden;}.sbs-ad-mid .sbs-desc{width:470px;font-family:arial;font-size:13px;color:#555;}.sbs-ad-mid .mid-right{float:right;width:290px;margin-top:-7px;height:auto;}.sbs-ad-mid .mid-right .sbs-example{border:1px solid #aaa;margin:12px 0 12px 0;padding:4px 4px 4px 7px;font-size:11px;position:relative;}.sbs-ad-mid .mid-right .sbs-example>span{display:inline-block;width:95%;line-height:15px;vertical-align:middle;}.sbs-ad-mid .mid-right .sbs-hovered{box-shadow:0 0 0 1px #FFC104;cursor:default;}.sbs-ad-mid .mid-right .sbs-example .example-equals{float:right;font-weight:900;font-size:15px;width:13px;height:13px;background-color:transparent;color:#aaa;border-radius:3px;overflow:hidden;margin:-1px 0 0 0;}.sbs-ad-mid .mid-right .sbs-example .example-equals .eq{margin:-2px 0 0 2px;}.sbs-ad-mid .mid-right .sbs-hovered .example-equals{background-color:#FA6800;color:#fff;overflow:hidden;}.sbs-ad-mid .mid-right .sbs-sub-heading{font-size:13px;font-weight:900;padding-top:15px;color:#333;}.sbs-ad-mid .mid-right .sbs-sub-title{background:url(/National_Library/20160330061658oe_/http://www.wolframalpha.com/images/sbs-popup/try_an_example.png) no-repeat scroll 0 0;min-height:20px;margin-top:10px;}.why-tooltip{float:right;color:#858585;}.qCircle{width:14px;height:14px;overflow:hidden;border-radius:7px;background-color:#858585;color:#fff;float:right;margin:1px 6px 0 6px;cursor:pointer;}.qCircle .qMark{margin:0 0 0 3px;font-size:13px;}#sbs-tooltip{display:none;position:absolute;right:-55px;top:-150px;width:200px;background-color:#fff;line-height:17px;padding:20px 20px 20px 42px;border-radius:8px;box-shadow:0 0 7px #555;}.sbs-tip-arrow{width:20px;height:20px;background-color:#fff;;display:block;position:absolute;top:120px;left:185px;transform:rotate(-45deg);-webkit-transform:rotate(-45deg);-ms-transform:rotate(-45deg);box-shadow:0 0 7px #555;}.sbs-tip-arrow:before{width:30px;height:30px;content:" ";position:absolute;left:0;top:-10px;background-color:#fff;}.qCircleLarge{width:18px;height:18px;border-radius:9px;background-color:#a498b4;color:#fff;position:absolute;left:0;margin:1px 0 0 15px;}.qCircleLarge .qMark{margin:0 0 0 5px;font-size:15px;}.sbs-ad-foot{text-align:left;width:895px;padding:20px 0 20px 35px;background-color:#f5f5f5;border-radius:0 0 8px 8px;}.sbs-round-foot{border-radius:8px;}#wpg-announce-popup{top:75px;font-size:13px;margin-left:-400px;width:800px;background-color:#fff;}.tall-head{height:auto!important;}.announce-text-img{float:left;padding:0 5px 0 0;}.tm{font-size:8px;position:relative;top:-10px;}.announce-mid-title{padding:0 0 10px 0;}.announce-mid{padding:20px 35px 0 35px;font-family:arial;font-weight:900;color:#555;border-bottom:solid 1px #dcdcdc;background-image:-ms-linear-gradient(top,#FFF 50%,#F5F5F5 100%);background-image:-moz-linear-gradient(top,#FFF 50%,#F5F5F5 100%);background-image:-o-linear-gradient(top,#FFF 50%,#F5F5F5 100%);background-image:-webkit-gradient(linear,left top,left bottom,color-stop(0.5,#FFF),color-stop(1,#F5F5F5));background-image:-webkit-linear-gradient(top,#FFF 50%,#F5F5F5 100%);background-image:linear-gradient(to bottom,#FFF 50%,#F5F5F5 100%);}.announce-mid p{font-size:13px;font-weight:normal;color:#666;margin:20px 0 30px 0;}.announce-mid-left{float:left;width:325px;}.announce-mid-left img{margin-left:-11px;}.announce-mid-right img{margin-left:-11px;}.announce-mid-right{float:right;width:325px;padding-right:10px;}.announce-foot{text-align:center;width:100%;margin:25px 0 15px 0;}.large-btn-text{font-size:16px;font-weight:900;color:#fff;padding:5px;}.dismissPop{font-weight:900;font-size:14px;color:#fe6518;}#trial-reactivated{margin-left:-325px;width:650px;}#trial-reactivated .btn-options{margin-bottom:15px;text-align:center;}#subscribe-pro .btn-options .upgradetopro,#subscribe-pro .btn-options .student-hat{vertical-align:middle;}#subscribe-pro .btn-options .upgradetopro{margin-right:20px;}#subscribe-pro .learn-more{font-size:11px;}#comeback-to-pro{margin-left:-220px;width:440px;}#comeback-to-pro .btn-options{margin-bottom:15px;text-align:center;}#comeback-to-pro .btn-options .upgradetopro{font-weight:bold;margin-left:20px;}#pro-needed{margin-left:-220px;width:440px;}#pro-needed .btn-options{text-align:center;}#pro-needed .no-credneeded{color:#B4B4B4;font-size:11px;}#verify-popup{height:auto!important;}