css question

@font-face {
    font-family: 'FiraMono';
    src: url('FiraMono-Regular.ttf');
}

.header {
    width: 100%;
    height: 50px;
    background-color: #050E05;
    position: fixed;
}

.header-text {
    font-family: "FiraMono";
    color: #FFFFFF;
    margin-left: 25px;
}

.header-div {
    margin-left: 15px;
    margin-right: 15px;
    border-bottom: 1px solid #222;
}

body {
    background-color: #050E05
}

.header-icon {
    height: 30px;
    width: 30px;
    padding-left: 5px;
}

.header-name {
    width: fit-content;
    height: 30px;
    background-color: black;
    margin-bottom: 10px;
}

.contents {
    padding-top: 50px /* to compensate the topbar */
}

p {
    font-family: "FiraMono";
    color: #FFFFFF
}