h1 {
    color:darkslategray;
    text-align: center;
    margin: 30px;
}

section {
    display: flex;
    flex-wrap: wrap;
}

#mainPart {
    top: 170px;
    left: 350px;
    margin: 50px;
    flex: 1 2;
    z-index: 2;
}

#otherParts {
    position: relative;
    float: left;
    flex: 1 1 40%;
}