:root {
    --first-gap: 10px;
    --second-gap: 20px;
    --first-opacity: 30%;
    --second_opacity: 10%;
}

html {
    height: 100%;
    background: #fff; /* Fallback color if gradients are not supported */
    background: -webkit-linear-gradient(
        #fff,
        #eee
    ); /* Safari 5.1-6, Chrome 10-25 */
    background: -moz-linear-gradient(#fff, #eee); /* Firefox 3.6-15 */
    background: -o-linear-gradient(#fff, #eee); /* Opera 11.1-12 */
    background: linear-gradient(#fff, #eee); /* Standard syntax */
    background-attachment: fixed;
    background-size: cover;
    background-repeat: no-repeat;
}

body {
    margin-block-end: 0em;
    margin-block-start: 0em;
    font-family: sans-serif;
    min-height: 100vh;
    color: #123;
    overflow-x: hidden;
    overflow-y: auto;
    background: transparent;
}

p {
    margin-block-end: 0em;
    margin-block-start: 0em;
}

.flex {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.title {
    font-size: 30px;
    font-weight: bold;
    margin: 15px;
    text-align: center;
}

.sub_title {
    font-weight: 300;
    font-size: 15px;
}

.avatar_box {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 20px;
}

.avatar_box > img {
    position: relative;
    height: 30px;
    width: 30px;
}

.avatar_box img:nth-of-type(1) {
    left: var(--second-gap);
    opacity: var(--second_opacity);
}
.avatar_box img:nth-of-type(2) {
    z-index: 1;
    left: var(--first-gap);
    opacity: var(--first-opacity);
}
.avatar_box img:nth-of-type(3) {
    z-index: 2;
}
.avatar_box img:nth-of-type(4) {
    z-index: 1;
    right: var(--first-gap);
    opacity: var(--first-opacity);
}
.avatar_box img:nth-of-type(5) {
    right: var(--second-gap);
    opacity: var(--second_opacity);
}

.customized_avatar {
    height: 27px !important;
    width: 27px !important;
    border: 2px white solid;
    border-radius: 50%;
}

.join {
    font-weight: 300;
    font-size: 12px;
    padding: 3px;
}

.tips {
    font-weight: 200;
}

#maskLayer {
    display: none;
    position: fixed;
    top: 2%;
    right: 5%;
    width: 40%;
    object-fit: contain;
    z-index: 200;
}