.navigation-logo img {
    height: 40px;
    text-align: center;
    animation: fadeIn 1s ease-in-out;
    /* transition: transform 0.3s ease-in-out; */
}

.drop-shadow {
    width: 100%;
}

/* .drop-shadow-1 {
    filter: drop-shadow(0px 35px 25px var(--blue-rgba-4));
    -webkit-filter: drop-shadow(0px 35px 25px var(--blue-rgba-4));
    -moz-filter: drop-shadow(0px 35px 25px var(--blue-rgba-4));
    opacity: 0;
    transform: translateY(100px);
    animation: slideInFade 1s ease-out forwards;
}

@keyframes slideInFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
} */
.pad {
    padding-top: 12rem;
}

.heig {
    height: 100%;
}

.main-heading h1 {
    text-align: center;
    font-size: 20px;
    line-height: 20px;
    cursor: pointer;
    letter-spacing: 1px;
    font-family: Avenir, Helvetica Neue, Arial, Helvetica, sans-serif;
}

.app-feature-single img {
    animation: yourAnimation 1s ease;
}

/* 定义淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* .app-feature-single {
    transition: transform 0.3s ease-in-out;
}

.app-feature-single:hover {
    transform: scale(1.05);
}

.app-feature-single {
    opacity: 0;
    transform: translateY(50px);
} */

@media (max-width: 991px) {
    .navigation-menu {
        visibility: hidden;
    }
}

@media (min-width: 991px) {
    .pad {
        padding: 0;
        margin: 0;
    }
}

@media (min-width: 991px) {
    .app-feature-wrapper {
        padding-top: 0;
    }
}