@mixin element-invisible {
    position: absolute;

    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
    padding: 0;

    clip: rect(0 0 0 0);
    overflow: hidden;
}

@mixin hide {
    display: none;
}

@mixin centered-content {
    display: grid;
    place-items: center;
}

@mixin mark-invalid-or-disabled-input {
    input:invalid {
        background-color: $c-invalid-input;
    }
    input:disabled {
        background-color: transparent;
    }
}

@mixin font-heading-upper {
    font-family: $font-heading;
    text-transform: uppercase;
}