index.css

body {
    font-family: "Fira Sans", sans-serif;
    text-align: center;
    max-width: 100%;
    max-height: 100%;
    height: 100%;
    width: 100%;
    overflow: hidden;
    transition: ease .2s;
    margin: 0;
    user-select: none;
    -webkit-user-select: none;
}

.bg_image {
    height: 100%;
    background-image: url("assets/bg.jpg");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

button {
    height: 50px;
    width: 250px;
    cursor: pointer;
    border: none;
    color: white;
    padding: 2px 32px;
    text-decoration: none;
    font-size: 16px;
    border-radius: 10px;
    transition: background-color ease-in-out .3s;
}

button:hover {
    background-color: #ff00aa;
    color: white;
}

.main {
    height: 100%;
    position: absolute;
    text-align: justify;
    top:0;
    right: 0;
    overflow: hidden;
    z-index: 2;
}

.actions {
    position: fixed;
    margin: 0;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 100px;
    background-color: rgba(0, 0, 0, 0.3);
}

.play {
    
    background-color: #aa406c;
    position: absolute;
    top: calc(50% - 25px);
    right: calc(50% - 125px);
}

.instance button {
    background: transparent;
    border-radius: 0;
}

.instance button:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.instance {
    position: absolute;
    left: 18px;
    bottom: calc(50% - 25px);
    width: 250px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.1);
    transition: background-color ease-in-out .3s, height ease-in-out .3s;
    border-radius: 10px;
    overflow: hidden;
}

.instance.extended {
    height: 150px;
}

.instance_others {
    position: absolute;
    overflow: hidden;
    bottom: 50px;
}

.current_instance {
    position: absolute;
    left: 0;
    bottom: 0;
    margin: 0;
}

.current_instance img {
    position: absolute;
    top: calc(50% - 6px);
    right: 15px;
    height: 12px;
    transition: transform linear .2s;
}

.account_settings button {
    background: transparent;
    border-radius: 0;
}

.account_settings button:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.account_settings {
    position: absolute;
    right: 18px;
    bottom: calc(50% - 25px);
    width: 250px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.1);
    transition: background-color ease-in-out .3s, height ease-in-out .3s;
    border-radius: 10px;
    overflow: hidden;
}

.account_settings.extended {
    height: 100px;
}

.settings {
    position: absolute;
    overflow: hidden;
    bottom: 50px;
}

.current_account {
    position: absolute;
    left: 0;
    bottom: 0;
    margin: 0;
}

.current_account img {
    position: absolute;
    top: calc(50% - 6px);
    right: 15px;
    height: 12px;
    transition: transform linear .2s;
}

.current_account #avatar {
    right: 200px;
    width: 50px;
    height: 50px;
    top: 0px;
}

.settings_view {
    position: absolute;
    top: 100%;
    color: #ffff;
    font-size: 18;
    transition: top ease-in-out .2s;
}

.settings_view.visible {
    top: 0;
}

.settings_view .tabs {
    position: absolute;
    left: 8vw;
    top: 20vh;/*calc(100% +  150px);*/
}

.settings_view p {
    cursor: pointer;
    transition: ease-in-out .3s;
}

.settings_view p:hover {
    text-shadow: 1px 1px 5px #fff;
    transition: ease-in-out .3s;
}

.accounts_container {
    position: absolute;
    left: 250px;
}

.account {
    margin: 5px;
    padding: 20px;
    border: solid 2px aqua;
    border-radius: 12px;
    width: 200px;
}