#thank_you_section {
    padding: 80px 5%;
    text-align: center;
}
.form-checkmark {
    width: 85px;
    height: 85px;
    fill: green;
}

@media (max-width: 981px) {
    .header_wrapper {
        background: #f5f5f5;
        box-shadow: #000 0 0 10px -2px;
    }
}

@media (max-width: 480px) {
    #thank_you_section {
        padding-inline: 20px;
    }
}