.math-list-item{display:inline-block;padding:30px 10px;text-align:center;width:310px;vertical-align:top}.math-box{background-color:#fff;border:1px solid grey;border-radius:5px;padding:0;position:relative;text-align:left}.math-box-title-link{cursor:pointer;display:block;padding:4px 7px 4px 0;position:relative;text-decoration:none}.math-box-tab{background-color:grey;border-radius:0 19px 19px 0;color:#fff;display:inline-block;height:38px;font:bold 18px/38px "Trebuchet MS",sans-serif;left:-4px;margin-right:2px;position:relative;text-align:center;vertical-align:middle;width:43px;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}.math-box-hdr{display:inline-block;text-align:left;vertical-align:middle;font-size:22px;font-family:'Roboto',sans-serif}.math-box-body{display:block;padding:5px 12px 15px}ol,ul{list-style:none;margin:0;padding:0}.math-box-variants li:first-child.active{margin-left:0}.math-box-variants li{display:inline-block}.math-box-variant-link{display:inline-block;position:relative;margin:0 2px 8px;border:1px solid #ddd;width:62px;text-align:center;padding:7px 0}.math-class .math-box-variant-link{width:initial;padding-left:5px;padding-right:5px}a.math-box-variant-link{color:#1f9ac7;text-decoration:none;font-family:'Roboto',sans-serif;font-size:15px}.math-box-description{color:#545454;font:normal 14px/1.5em Verdana,sans-serif;text-align:left;margin-bottom:20px;margin-left:2px;margin-right:2px}.blue2-bg{background:#10a0b6}.blue2-text,.blue2-text:hover{color:#10a0b6}.blue2-brdr{border-color:#10a0b6}.blue2-brdr .math-box-variant-link:hover{color:#fff;background:#10a0b6}.green-bg{background:#00b971}.green-text,.green-text:hover{color:#00b971}.green-brdr{border-color:#00b971}.green-brdr .math-box-variant-link:hover{color:#fff;background:#00b971}.green2-bg{background:#42ae18}.green2-text,.green2-text:hover{color:#42ae18}.green2-brdr{border-color:#42ae18}.green2-brdr .math-box-variant-link:hover{color:#fff;background:#42ae18}.orange-bg{background:#f39317}.orange-text,.orange-text:hover{color:#f39317}.orange-brdr{border-color:#f39317}.orange-brdr .math-box-variant-link:hover{color:#fff;background:#f39317}.purple-bg{background:#9424b8}.purple-text,.purple-text:hover{color:#9424b8}.purple-brdr{border-color:#9424b8}.purple-brdr .math-box-variant-link:hover{color:#fff;background:#9424b8}.green4-bg{background:#78c72f}.green4-text,.green4-text:hover{color:#78c72f}.green4-brdr{border-color:#78c72f}.green4-brdr .math-box-variant-link:hover{color:#fff;background:#78c72f}.blue-bg{background:#00a1de}.blue-text,.blue-text:hover{color:#00a1de}.blue-brdr{border-color:#00a1de}.blue-brdr .math-box-variant-link:hover{color:#fff;background:#00a1de}.red-bg{background:#d74726}.red-text,.red-text:hover{color:#d74726}.red-brdr{border-color:#d74726}.red-brdr .math-box-variant-link:hover{color:#fff;background:#d74726}.yellow-bg{background:#eabc00}.yellow-text,.yellow-text:hover{color:#eabc00}.yellow-brdr{border-color:#eabc00}.yellow-brdr .math-box-variant-link:hover{color:#fff;background:#eabc00}.green3-bg{background:#0bc1b6}.green3-text,.green3-text:hover{color:#0bc1b6}.green3-brdr{border-color:#0bc1b6}.green3-brdr .math-box-variant-link:hover{color:#fff;background:#0bc1b6}.blue2-bg{background:#147cc4}.blue2-text,.blue2-text:hover{color:#147cc4}.blue2-brdr{border-color:#147cc4}.blue2-brdr .math-box-variant-link:hover{color:#fff;background:#147cc4}.blue3-bg{background:#00ccbe}.blue3-text,.blue3-text:hover{color:#00ccbe}.blue3-brdr{border-color:#00ccbe}.blue3-brdr .math-box-variant-link:hover{color:#fff;background:#00ccbe}.math-box-hdr:hover{text-decoration:underline}.math-h1,.math-h2{font-family:'Roboto',sans-serif;text-align:center;color:#147cc4}.math-h1{font-size:40px}.math-box-tab-sign{font-size:38px;line-height:36px}.math-box-tab-digit{font-size:32px;line-height:38px}.math-class{height:365px}.math-class .math-box-variants a{width:initial;padding-left:5px;padding-right:5px}.math-class .math-box-variants{}.class-sign{font-weight:bold}.math-primery{margin-top:50px;margin-bottom:20px;text-align:center}.math-primery li{display:inline-block;padding-left:5px;padding-bottom:2px;margin-left:22px;margin-right:22px;margin-bottom:20px;font-size:25px;border-bottom:1px dashed #aaa;font-family:Arial;text-align:left}.math-otvet-placeholder{display:inline-block;width:50px}.math-primery-2digit li{min-width:170px}.math-primery-3digit li{min-width:170px}.math-primery-4digit li{min-width:190px}