style.css

* /* this will replace all the default settings of browser with the below one */
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body
{
    background-color: #ccc;
}
.container /*class selector*/
{
    max-width: 900px;
    margin: 0 auto; /*auto-fit*/
}
.apply_box
{
    max-width: 600px;
    padding: 20px;
    background-color: white;
    margin: 0 auto;
    margin-top: 50px;
    box-shadow: 4px 3px 5px rgba(1,1,1,0.1); /*left right top rgba*/
}
.form_container
{
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}
.form_control
{
   display: flex;
   flex-direction: column; 
}
input,
select,
textarea
{
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 15px;
}
input:focus
{
    outline-color: red;
}
.button_container
{
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}
button
{
    background-color: red;
    border: transparent solid 2px;
    padding: 5px 10px;
    border-radius: 8px;
    transition:0.3s ease-in;
}
button:hover
{
   background-color: #ccc;
   border: 2px solid yellow;
   color: black;
   transition: 0.3s ease-out;
}
.textarea_control
{
    grid-column: 1/span 2;
}
.textarea_control textarea
{
    width: 100%;
}
@media(max-width: 460px) /* To make it mobbile compatible */
{
    .textarea_control
    {
        grid-column: 1/ span 1;
    }
};