body {
    -webkit-tap-highlight-color: transparent;
    font-family: 'Open Sans';
}

input:not([type="file"]), textarea, select {
    font-family: 'Open Sans';
    font-size: 14px;
    border-color: #ccc;
    border-width: 1px;
    border-style: solid;
    padding: 7px;
    border-radius: 4px;
    background-color: transparent;
}

select {
    padding-left: 3px;
}

::placeholder {
    color: silver;
}

button, input::file-selector-button {
    font-size: 14px;
    border-radius: 9999px;
    border-color: transparent;
    font-weight: bold;
    padding: 7px;
    background-color: #808080;
    color: white;
    cursor: pointer;
}

input#file-upload-button::file-selector-button {
    content: "+";
}

button:hover, input[type="file"]::file-selector-button:hover {
    background-color: #8f8f8f;
}

button:active, input[type="file"]::file-selector-button:active {
    background-color: #9e9e9e;
}

button:disabled {
    background-color: whitesmoke;
    color: lightgrey;
    cursor: default;
}

input:focus, textarea:focus, select:focus {
    border-color: #3e3e3e;
    outline: none;
}

input:invalid:not(:focus):not(:placeholder-shown), textarea:invalid:not(:focus):not(:placeholder-shown) {
    border-color: tomato;
}

select:invalid {
    color: silver;
}