* {
    margin: 0px;
    padding: 0px;
}

header {
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    background-color: blueviolet;
    height: 100px;
}

section {
    position: fixed;
    top: 100px;
    bottom: 20px;
    width: 100vw;
}

section .solpanel {
    background-color: brown;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 200px;
}

section main {
    background-color: coral;
    position: absolute;
    top: 0;
    right: 200px;
    left: 200px;
    bottom: 0;
}

section .sagpanel {
    background-color: darkgreen;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 200px;
}

footer {
    background-color: aqua;
    height: 20px;
    position: fixed;
    bottom: 0px;
    right: 0px;
    left: 0px;
    text-align: center;
}