body {
    margin: 0;
    display: flex;
}

.esquerda {
    height: 100vh;
    width: 50%;
    background-color: coral;
}

.direita {
    height: 100vh;
    width: 50%;
    background-color: cornflowerblue;
}

.item {
    border: solid 5px black;
    background-color: darkgrey;
    color: white;
    height: 100px;
    font-size: 40px;
    margin: 10px;
    vertical-align: middle;
    text-align: center;
}