html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
    position: relative;
    min-height: 100%;
}

body {
    margin-bottom: 60px;
}

.border-top {
    border-top: 1px solid #e5e5e5;
}

.border-bottom {
    border-bottom: 1px solid #e5e5e5;
}

.box-shadow {
    box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
}

.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    white-space: nowrap;
    line-height: 60px;
}

.intro-box,
.app-card {
    align-items: flex-start;
    background: #ffffff;
    border: 1px solid #d9e1db;
    border-radius: 8px;
    color: #17211b;
    display: flex;
    gap: 24px;
    max-width: 1180px;
    padding: 20px;
}

.intro-box {
    align-items: center;
    background:
        linear-gradient(135deg, rgba(23, 107, 91, 0.10), rgba(240, 247, 255, 0.65)),
        #ffffff;
    margin: 0 auto 14px;
}

.app-card-grid {
    display: grid;
    gap: 14px;
    margin: 0 auto 28px;
    max-width: 1180px;
}

.app-card {
    margin: 0;
}

.intro-box__logo,
.app-card__logo {
    flex: 0 0 auto;
    margin: 0;
}

.intro-box__logo {
    height: 128px;
    width: 128px;
}

.app-card__logo {
    height: 96px;
    width: 96px;
}

.intro-box__text,
.app-card__text {
    flex: 1 1 auto;
    min-width: 0;
}

.app-card__text h2 {
    font-size: 1.6rem;
    letter-spacing: 0;
    margin: 0 0 0.6rem;
}

.intro-box__text p,
.app-card__text p {
    color: #5f6b63;
    font-size: 1rem;
    line-height: 1.55;
    margin: 0;
}

.intro-box__link,
.intro-box__link:active,
.intro-box__link:focus,
.intro-box__link:hover,
.intro-box__link:visited {
    color: inherit;
    text-decoration: none;
}

@media (max-width: 640px) {
    .intro-box,
    .app-card {
        align-items: flex-start;
        flex-direction: column;
        gap: 16px;
        padding: 14px;
    }
}

@media (min-width: 768px) {
    .app-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .app-card--wide {
        grid-column: 1 / -1;
    }
}