body,
body * {
    margin: 0;
    padding: 0;
    vertical-align: top;
    box-sizing: border-box;
}

body {
    display: grid;
    grid-template-columns: 100px 1fr 1fr 1fr;
    justify-items: center;
    align-items: center;
    gap: 5vmin;
    padding: 40px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS',
        sans-serif;
}

.container {
    border: 1px solid;
}

.left {
    width: 40px;
    height: 40px;
    background-color: pink;
}
.center {
    width: 200px;
    height: 100px;
    background-color: aquamarine;
}
.right {
    width: 60px;
    height: 60px;
    background-color: tan;
}

.float > * {
    float: left;
}
.flex {
    display: flex;
}

.relative > .left {
    position: relative;
    top: 20px;
    left: 20px;
}
.relative > .right {
    position: relative;
    top: 20px;
    left: 20px;
}

.absolute {
    position: relative;
}
.absolute > .left {
    position: absolute;
    top: 20px;
    left: 20px;
}
.absolute > .right {
    position: absolute;
    top: 20px;
    left: 20px;
}