body{
    height: 100vh;
    display: flex;
    flex-direction: column;
}
main{
    position:relative;
    z-index: 1;
    background-color: #b3dbdc82;
    min-height: 400px;
    flex-grow: 1;
    height: auto;
}
main h1{
    text-align: center;
    padding-top: 80px;
}
main div{
    padding-left: 100px;
    padding-right:10px;
}
main div ul :last-child{
    padding-bottom: 15px;
}

/* responsive design */
@media screen and (min-width: 1500px) {
    main div p, main div li{
        font-size: 1.3em;
    }
}

@media screen and (max-width: 1200px) {
    main div{
        padding-left:30px;
    }
    main h1{
      font-size:1.75em;
    }
}
@media screen and (max-width: 992px) {
    main{
        display: block;
        min-height: auto;
    }
    main h1{
        font-size:1.45em;
    }
}
@media screen and (max-width: 768px) {
    main h1{
        font-size:1.15em;
    }
      main div ul{
        padding-left:25px;
    }
}
@media screen and (max-width: 576px) {
    main div{
        padding-left:15px;
    }
}