html{
    margin: 0;
    width: 100%;
    height: 100%;
}

body{
    margin: 0;
    background: #333;
}

header{
    height: 120px;
    background: url('../images/logo.png') center no-repeat;
    padding: 10px 0;
}

#years{
    padding: 0 100px;
}

#years article{
    float: left;
    width: 32%;
    background: rgba(255,255,255,.3);
    height: 200px;
    margin-right: 2%;
    margin-top: 2%;
    box-shadow: 0px 0px 5px #ccc;
    border-radius: 3px;
    transition: .4s background;
    vertical-align: middle;
    padding: 80px 0;
    text-align: center;
    box-sizing: border-box;
}

#years article:nth-child(3n){
    margin-right: 0;
}

#years article:hover{
    background: rgba(255,255,255,.8);
    cursor: pointer;
}

#years article a{
    text-decoration: none;
    color: #fff;
    font-size: 36px;
    font-weight: bolder;
    transition: .4s color;
}

#years article:hover a{
    color: #009688;
}