html, body {
    width: 100vw;
    height: 100%;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    background-color: #e0e0e0;

    font-family: Montserrat, Roboto, Arial, sans-serif;
    line-height: 1.5;
    font-weight: 700;
}

.container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: inherit;
}

.container__iframe {
    width: 100%;
    height: 50vh;
    position: relative;
    
    transition: height .2s ease, width .2s ease;
}

.container__iframe.container__iframe--hidden {
    visibility: hidden;
    height: 0;
}

.container__iframe.container__iframe--visible {
    visibility: visible;
}

.message_box {
    width: 85%;
    border: solid 2px #000;
    position: relative;
    border-radius: 5px;
    padding: 2rem 1rem 1rem 1rem;
    background-color: white;
    box-shadow: 4px 4px 4px 2px rgba(0, 0, 0, 0.2);
}

@media (min-width: 42rem) {
    .message_box {
        width: 40rem;
    }
}

.message_box__icon .material-symbols-outlined {
    font-size: 110px;
    font-variation-settings:
         'FILL' 1,
         'wght' 400,
         'GRAD' 0,
         'opsz' 48;
    background-color: #fff;
    margin-left: -10px;
    margin-top: -10px;
}

.message_box .message_box__icon {
    position: absolute;
    width: 90px;
    height: 90px;
    overflow: hidden;
    top: calc(0% - 45px);
    left: calc(50% - 45px);
    border-radius: 50%;
    border: solid 2px #000;
    z-index: 1;
    visibility: hidden;
}

.message_box .message_box__title {
    text-align: center;
    font-size: 1.5rem;
    
}

.message_box .message_box__message {
    text-align: center;
    font-size: 1rem;
}

.message_box .message_box__details {
    transition: height .2s ease;
}

.message_box .message_box__details.message_box__details--hidden {
    visibility: hidden;
    height: 0;
}

.message_box .message_box__details {
    text-align: center;
    font-size: .8rem;
    color: #555;
}

.message_box.message_box--error .message_box__icon--error {
    color: #fa6f6f;
    visibility: visible;
}

.message_box.message_box--success .message_box__icon--success {
    color: #74fa74;
    visibility: visible;
}

.message_box.message_box--pending .message_box__icon--pending {
    visibility: visible;
    background-color: #fcbd78;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader {
    border-top: solid 5px #fff;
    border-radius: 50%;
    width: 4rem;
    height: 4rem;
    display: block;

    animation-name: spin;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}

@keyframes spin {
    from {
        transform:rotate(0deg);
    }
    to {
        transform:rotate(360deg);
    }
}

.button-group {
    display: flex;
    flex-direction: row;
}

.button-group .button {
    display: block;
    flex: 1;
    height: 3rem;
    border-radius: .4rem;
    border: solid 1px #000;
    cursor: pointer;
}

.button-group .button.button--success {
    background-color: #74fa74;
}

.button-group .button.button--error {
    background-color: #fa6f6f;
}

.button-group .button:not(:last-of-type) {
    margin-right: 1rem;
}