style.css

.sweetalert2-title {
    font-size: 18px;
    font-family: Arial, Helvetica, sans-serif;
    margin-top: 1rem
}

.sweetalert2-validation-message {
    font-size: 16px;
    font-family: Arial, Helvetica, sans-serif;
}

.sweetalert2-container {
    font-size: 14px;
    font-family: Arial, Helvetica, sans-serif;
}

.swal2-select {
    border-radius: 4px!important;
}

#donate-button {
    font-size: 12px;
    margin-left: auto;
    background: rgb(150, 79, 216);
    border-radius: 3px;
    padding: 3px 5px;
    cursor: pointer;
    font-family: Arial;
    line-height: 18px;
    color: white;
    transform: rotate(270deg);
    display: inline-block;
    top: 65px;
    left: -34px;
    position: absolute;
 }

#donate-button:hover {
    background: #a86ddf;
}

.dark-mode {
    background-color: black;
}

#warning-message {
    display: none;
    position: absolute;
    top: 86%;
    left: 50%;
    font-size: 12px;
    color: white;
    background: rgb(255 26 26);
    border-radius: 3px;
    padding: 3px 5px;
    font-family: Arial;
    line-height: 18px;
    margin: auto;
    transform: translate(-50%, -50%);
    opacity: 0.7;
 }

 .center-spinner {
    position: absolute;
    inline-size: 100%;
    display: flex;
    justify-content: center; /* Centers horizontally */
    align-items: center; /* Centers vertically */
    height: 100vh; /* Full viewport height */
}

.spinner-wrapper {
    inline-size: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.spinner {
    display: inline-block;
    position: relative;
    block-size: 80px;
    inline-size: 80px;
}

.spinner div {
    display: block;
    position: absolute;
    box-sizing: border-box;
    block-size: 64px;
    inline-size: 64px;
    margin: 8px;
    animation: spinner 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border: 8px solid #639aff;
    border-radius: 50%;
    border-color: #639aff transparent transparent transparent;
}

.spinner div:nth-child(1) {
    animation-delay: -0.45s;
}

.spinner div:nth-child(2) {
    animation-delay: -0.3s;
}

.spinner div:nth-child(3) {
    animation-delay: -0.15s;
}

@keyframes spinner {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}