fixed_layout.css

.el-header {
    margin-left: calc(200px + 1.65rem);
    margin-right: 1.65rem;
    margin-top: .6rem;
    width: calc(100vw - 200px - 3.3rem);
    position: fixed;
    top: 0;
    z-index: 2;
    box-sizing: border-box;
}

.element-main {
    margin-top: 1.3rem;
    margin-left: calc(212px + 1.65rem);
    width: calc(100vw - 224px - 3.3rem);
}

.analysis-option-wrapper {
    width: calc(100vw - 200px - 3.3rem);
    margin-left: calc(200px + 1.65rem);
    margin-right: 1.65rem;
    background: #F9F9F9;
    position: fixed;
    top: 0;
    margin-top: 1.18rem;
    z-index: 2;
}