*
{
    font-family: 'Roboto Slab';
    margin: 0;
    padding: 0;
}

input
{
    -webkit-appearance: none;
}

body
{
    background-color: lightgray;
    overflow-y: scroll;
}

.header_background
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    border-bottom: 1px solid gray;
    box-shadow: 2px 0 10px -3px black;
    background-color: white;
    z-index: 1;
}

.header_background > .header_core
{
    width: 1366px;
    max-width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header_background > .header_core > .logo
{
    display: flex;
    align-items: center;
}

.header_background > .header_core > .logo img
{
    height: 75px;
}

.header_background > .header_core > .logo a
{
    color: black;
    text-decoration: none;
    letter-spacing: 1px;
}

.header_background > .header_core > .menu a:hover
{
    color: pink;
    text-shadow: 0 0 4px;
}

.header_background > .header_core > .menu a
{
    color: black;
    font-size: 80%;
    text-decoration: none;
    display: inline-block;
    margin: 0 15px;
}

.header_background > .header_core > .menu_portrait, .header_background > .header_core > #menu_portrait_button
{
    display: none;
}