div.gallery {
    border: 1px solid #ccc;
}

div.gallery:hover {
    border: 1px solid #777;
}

div.gallery img {
    width: 100%;
    height: auto;
}

div.desc {
    padding: 15px;
    text-align: center;
}

* {
    box-sizing: border-box;
}

.responsive {
    padding: 0 6px;
    float: left;
    width: 24.99999%;
}

@media only screen and (max-width: 700px) {
    .responsive {
        width: 49.99999%;
        margin: 6px 0;
    }
}

@media only screen and (max-width: 500px) {
    .responsive {
        width: 100%;
    }
}

form {
    background-color: #4654e1;
    width: 300px;
    height: 44px;
    border-radius: 5px;
    display: flex;
    flex-direction: row;
    align-items: center;
}

input {
    all: unset;
    font: 16px system-ui;
    color: #fff;
    height: 100%;
    width: 100%;
    padding: 6px 10px;
}

::placeholder {
    color: #fff;
    opacity: 0.7;
}