.chemistry{
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-150%, -30%);
    border: none;
    background: rgb(0, 0, 0);
    padding: 150px 30px;
    font-size: 50px;
    cursor: pointer;
    display: inline-block;
    font-family: 'Trebuchet MS', sans-serif;
    -moz-box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    -webkit-box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    color:white;
}
.physics{
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(50%, -30%);
    border: none;
    background: rgb(0, 0, 0);
    padding: 150px 60px;
    font-size: 50px;
    cursor: pointer;
    display: inline-block;
    font-family: 'Trebuchet MS', sans-serif;
    -moz-box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    -webkit-box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    box-shadow: 1px 2px 3px rgba(0,0,0,.5);
    color:white;
    border-style: groove;

}

.words{
    border-style: groove;
    margin: 25px 50px 75px 100px;
    font-family: Helvetica, sans-serif;
}
.words2{
    font-family: Helvetica, sans-serif;
}

body{
    background: rgb(172,255,255);

}