html,
 body {
     width: 98%;
     height: 98%;
 }
 #labs {
     width: 60%;
     height: 45%;
     margin-left: auto;
     margin-right: auto;
     margin-top: 100px;
     background-color: mediumpurple;
     border: 2px solid beige;
 }
 #blok1 {
     box-shadow: 5px 5px 10px black;
     width: 100%;
     height: 30px;
     background-color: green;
     font-size: 20px;
     margin-left: auto;
     margin-right: auto;
     margin-top: 0;
     margin-bottom: 3%;
     text-align: center;
     font-family: helvetica, verdana;
     background-color: rgba(139, 234, 70, 0.6);
 }
 #blok2 {
     box-shadow: 5px 5px 10px black;
     width: 80%;
     height: 350px;
     font-size: 30px;
     margin-left: auto;
     margin-right: auto;
     margin-bottom: 3%;
     text-align: center;
     font-family: helvetica, verdana;
     background-color: rgba(139, 234, 70, 0.5);
     background-image: url(images/social-google-box-icon.png);
     background-repeat: no-repeat;
     background-position: top;
     background-position: right top;
     animation-name: turn;
     animation-duration: 3s;
     animation-iteration-count: 5;
     animation-timing-function: linear;
 }
 #blok2 img {
     top: 5px;
 }
 #blok2:hover {
     float: right;
 }
 @keyframes turn {
     from {
         transform: rotateX(0deg);
     }
     to {
         transform: rotateX(360deg);
     }
 }
 #blok3 {
     box-shadow: 5px 5px 10px black;
     width: 80%;
     font-size: 40px;
     height: 250px;
     margin-left: auto;
     margin-right: auto;
     margin-top: 40px;
     text-align: center;
     background-color: rgba(139, 234, 70, 0.4);
     font-family: helvetica, verdana;
     background-image: url(images/firefox-2.png);
     background-repeat: no-repeat;
     background-position: left bottom;
 }
 #blok4 {
     box-shadow: 5px 5px 10px black;
     width: 80%;
     font-size: 50px;
     line-height: 100px;
     color: red;
     height: 150px;
     margin-left: auto;
     margin-right: auto;
     margin-top: 30px;
     text-align: center;
     font-family: helvetica, verdana;
     background-color: rgba(139, 234, 70, 0.4);
 }
 #blok4:hover {
     margin-top: 50px;
 }
 #blok4 p {
     position: relative;
     top: 50%;
     transform: translateY(-50%);
     line-height: 1.7;
     display: inline-block;
     vertical-align: middle;
 }