.header{
    height: 5.5rem;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    position: fixed;
    top: 0rem;
    left: 0rem;
    right: 0rem;
    z-index: 100;
    background-color: white;
    border-bottom-width: 0.1rem;
    border-bottom-style: solid;
    border-bottom-color: rgb(228,228,228);
}
.left-section{
    display: flex;
    align-items: center;
}
.hamburger-menu{
    height: 2.4rem;
    margin-left: 2.4rem;
    margin-right: 2.0rem;
}
.youtube-logo{
    height: 2.0rem;
}
.middle-section{
    flex: 1;
    margin-left: 7.0rem;
    margin-right: 3.5rem;
    max-width: 50.0rem;
    display: flex;
    align-items: center;
}
.search-bar{
    flex: 1;
    height: 3.6rem;
    padding-left: 1.0rem;
    font-size: 1.6rem;
    border-style: solid;
    border-width: 0.1rem;
    border-color: rgb(192,192,192);
    border-radius: 0.2rem;
    box-shadow: inset 0.1rem 0.2rem 0.3rem rgba(0,0,0,0.05);
    width: 0;
}
.search-bar::placeholder{
    font-size: 1.6rem;
}
.search-button{
    height: 4.0rem;
    width: 6.6rem;
    background-color: rgb(240,240,240);
    border-width: 0.1rem;
    border-style: solid;
    border-color: rgb(192,192,192);
    margin-left: -0.1rem;
    margin-right: 1.0rem;
    position: relative;
}
.search-button, .voice-search-button, .upload-icon-container,
.yt-apps-tray, .notifications-icon-container{
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.search-button .tooltip,
.voice-search-button .tooltip,
.upload-icon-container .tooltip,
.notifications-icon-container .tooltip,
.yt-apps-tray .tooltip{
    position: absolute;
    background-color: gray;
    color: white;
    padding-top: 0.4rem;
    padding-bottom: 0.4rem;
    padding-left: 0.8rem;
    padding-right: 0.8rem;
    border-radius: 0.2rem;
    bottom: -3.0rem;
    opacity: 0;
    transition: opacity 0.15s;
    pointer-events: none;
    white-space: nowrap;
}
.search-button:hover .tooltip,
.voice-search-button:hover .tooltip,
.upload-icon-container:hover .tooltip,
.notifications-icon-container:hover .tooltip,
.yt-apps-tray:hover .tooltip{
    opacity: 1;
}
.search-icon{
    height: 2.5rem;
}
.voice-search-button{
    height: 4.0rem;
    width: 4.0rem;
    border-radius: 2.0rem;
    border: none;
    background-color: rgb(245,245,245);
}
.voice-search-icon{
    height: 2.4rem;
}
.right-section{
    width: 18.0rem;
    margin-right: 2.0rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.upload-icon{
    height: 2.4rem;
    cursor: pointer;
}
.upload-icon-container .tooltip{
    font-size: 1.4rem;
}
.youtube-apps-icon{
    height: 2.4rem;
    cursor: pointer;
}
.notifications-icon{
    height: 2.4rem;
    cursor: pointer;
}
.notifications-icon-container{
    position: relative;
}
.notifications-count{
    position: absolute;
    top: -0.2rem;
    right: -0.5rem;
    background-color: rgb(200,0,0);
    color: white;
    font-size: 1.1rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    padding-bottom: 0.2rem;
    border-radius: 1.0rem;
}
.current-user-picture{
    height: 3.2rem;
    border-radius: 1.6rem;
    cursor: pointer;
}
.yt-apps-tray .tooltip, .notifications-icon-container .tooltip,
.upload-icon-container .tooltip{
    font-size: 1.2rem;
    bottom: -4.0rem;
}