.header_bar {
    display: block;
    position: fixed;
    top: 0;
    z-index: 999;
    width: 100%;
    height: 100px;
    background-color: darkorange;
    text-align: left;
    line-height: 100px;
    border-bottom: 1px solid black;
}

.header_placeholder {
    display: block;
    position: relative;
    width: 100%;
    height: 100px;
}

.header_bar > span {
    font-size: 60px;
    color: darkgoldenrod;
    text-shadow: -1px -2px lightgrey, 1px 2px black;
}

.header_bar_account {
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    height: inherit;
    width: 10%;
    min-width: 100px;
    text-align: center;
    color: white;
    text-shadow: 1px 1px darkgoldenrod;
}

.header_bar_account > form {
    position: relative;
    width: 100%;
    line-height: 20px;
}

.header_bar_account > form > input{
    width: inherit;
    box-sizing: border-box;
}

.header_bar_account > form > button{
    width: inherit;
    box-sizing: border-box;
}

.header_bar_account > .sign_up {
    position: absolute;
    right: 0;
    bottom : 10px;
    height: 20px;
    width: 100%;
    line-height: 20px;
}

.header_bar_account > .sign_up:hover {
        color: black;
}

@media only screen and (min-width: 480px){
    .header_bar{text-align: center;}
}