body {
    width: 100%;
    margin: 0;
}

.center-panel {
    /* display: block; */
    margin: 0 auto;
    text-align: center;
    max-width: 100%;
}

.header-img {
    max-width: 100%;
}

.temp-img {
    max-width: 100%;
}

#title1 {
    position: relative;
    top: -190px;
}

#title2 {
    position: relative;
    top: -190px;
}

.title {
    margin: 0.5rem 2.5rem;
    text-align: right;
    font-weight: 600;
    font-size: 36px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    z-index: 800;
}

#sub-title {
    position: relative;
    top: -190px;
}

.sub-title {
    color: #939393;
    margin: 0.5rem 2.5rem;
    text-align: right;
    font-weight: 300;
    font-size: 32px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    z-index: 800;
}

.para {
    max-width: 80rem;
    margin: 0 auto 5rem;
}

.para-title {
    transform: skewX(-25deg);
    background: #c8000b;
    text-align: center;
    margin: 12rem auto 8rem;
    box-shadow: -0.5rem 0.5rem #FFFFFF, -0.5rem 0.5rem 0 0.1rem #c8000b;
}

.para-title>h2 {
    transform: skewX(25deg);
    padding: 1rem;
    color: #FFFFFF;
    font-weight: 600;
    font-size: 2.4rem;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    z-index: 800;
}

#program-overview {
    width: 480px;
}

#leading-in-technology {
    width: 720px;
}

#urls {
    width: 36rem;
}

.para-text {
    font-size: 1.5rem;
    text-align: left;
}

ul li {
    padding: 0.5rem 0 0.5rem 0;
    line-height: 3rem;
}

ul li::marker {
    color: #c8000b;
}

ul hr {
    margin-bottom: 3rem;
    border: 2px dashed;
}

.timeline-item {
    border-left: 6px solid #c8000b;
    text-align: left;
}

.timeline-item>h2 {
    font-size: 1.5rem;
    color: #c8000b;
    text-align: left;
    padding: 0 0 2rem 3rem;
}

.timeline-item ul {
    list-style: none;
    padding-inline-start: 3rem;
}

.timeline-item li a {
    font-size: 1.5rem;
    position: relative;
    z-index: 100;
    top: -2rem;
}

.circle {
    background: #FFFFFF;
    border: 0.3rem solid #c8000b;
    border-radius: 50%;
    height: 0.5rem;
    width: 0.5rem;
    left: -3.75rem;
    position: relative;
    display: block;
}

/* 下载按钮的样式 */

.button {
    position: relative;
    padding: 8px 16px;
    background: #939393;
    border: none;
    outline: none;
    border-radius: 3px;
    cursor: pointer;
    margin-top: 3rem;
    margin-bottom: 5rem;
}

.button:active {
    background: #939393;
}

.button__text {
    font: bold 20px "Quicksand", san-serif;
    color: #ffffff;
    transition: all 0.2s;
}

.button--loading .button__text {
    visibility: hidden;
    opacity: 0;
}

.button--loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    border: 4px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: button-loading-spinner 1s ease infinite;
}


/* 下载链接样式 */
.downloading {
    text-decoration: none !important;
    pointer-events: none !important;
    cursor: not-allowed !important;
    color: grey !important;
}

.download:active {
    background: #939393;
}

.download--loading::after {
    cursor: not-allowed !important;
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    border: 4px solid transparent;
    border-top-color: blue;
    border-radius: 50%;
    animation: download-loading-spinner 1s ease infinite;
}

@keyframes download-loading-spinner {
    from {
        transform: rotate(0turn);
    }

    to {
        transform: rotate(1turn);
    }
}

#download-link {
    text-decoration: underline;
    cursor: pointer;
    color: blue;
}

.scroll-up {
    --tw-bg-opacity: 1;
    background-color: rgb(78 107 255 / var(--tw-bg-opacity));
    border-radius: 0.25rem;
    justify-content: center;
    align-items: center;
    width: 2.5rem;
    height: 2.5rem;
    display: flex !important;
    z-index: 999;
    right: 2rem;
    bottom: 2rem;
    position: fixed;
    cursor: pointer;
    background-image: none;
}

.arrow-up {
    fill: #FFFFFF;
    width: 1.25rem;
    height: 1.25rem;
    display: block;
}

.email {
    padding: 1rem;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.5rem;
    vertical-align: middle;
    text-align: right;
    font-weight: normal;
    width: 85%;
}

.email span {
    border-bottom: 0.3rem solid #c8000b;
}