@media (width > 500px) {
.catalog-header {

    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;

    padding: 5rem 0;
    background-color: #68a9ec;
    color: white;
}

.catalog-header > h1 {
    font-size: 60px;
    margin: 0;
    margin-top: 7rem;
    margin-bottom: 2rem;
}

.catalog-header > h3 {
    font-size: 40px;
    margin: 0;
}

.form-block {
    width: 100vw;
    height: 100%;
    display: grid;
    grid-template-columns: 30% 40% 30%;
}

form {
    width: 100%;
    margin-top: 5rem;
    display: flex;
    flex-direction: column;
    margin-bottom: 2rem;
}

.form_block {
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

input {
    font-size: 18px;
    padding: 0.3rem 1rem;
}

label {
    font-size: 20px;
}

form > button {
    background-color: #4895EF;
    color: white;
    padding: 0.3rem 1rem;
    border: none;
    border-radius: 10px;
    font-size: 20px;
    cursor: pointer;
    margin-bottom: 20px;
}

form > button:hover {
    background-color: #307ed8;
}

form > span {
    width: 100%;
    display: block;
    text-align: center;
}

form > a, form > a:active {
    color: blue;
}

.error > ul {
    list-style: none;
    padding: 0;
    margin-bottom: 10px;
}

.error {
    color: #e35f5f;
}
}
@media (width <= 500px) {

    .catalog-header {

        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;

        padding: 2rem 0;
        padding-top: 3rem;
        background-color: #68a9ec;
        color: white;
    }

    .catalog-header > h1 {
        font-size: 40px;
        margin: 0;
    }

    .form-block {
        width: 100vw;
        height: 100%;
        display: grid;
        grid-template-columns: 10% 80% 10%;
    }

    form {
        width: 100%;
        margin-top: 5rem;
        display: flex;
        flex-direction: column;
        margin-bottom: 4rem;
    }

    .form_block {
        width: 100%;
        display: flex;
        flex-direction: column;
        margin-bottom: 1rem;
    }

    input {
        font-size: 18px;
        padding: 0.3rem 1rem;
    }

    label {
        font-size: 20px;
    }

    form > button {
        background-color: #4895EF;
        color: white;
        padding: 0.3rem 1rem;
        border: none;
        border-radius: 10px;
        font-size: 20px;
        cursor: pointer;
        margin-bottom: 20px;
    }

    form > button:hover {
        background-color: #307ed8;
    }

    form > span {
        width: 100%;
        display: block;
        text-align: center;
    }

    form > a, form > a:active {
        color: blue;
    }

    .error > ul {
        list-style: none;
        padding: 0;
        margin-bottom: 10px;
    }

    .error {
        color: #e35f5f;
    }
}