@import "{{site.theme}}";
body
{
    background: linear-gradient(to top right, green, blue, rgb(0, 213, 255));
}
.container 
/* main calculator box */
{
    background-color: gray;
    max-width: 400px;
    margin: 10vh auto 0 auto;
    box-shadow: 0px 0px 43px 0px gray;
}
#display
/* for displaying the numbers */
{
    text-align: right;
    height: 90px;
    line-height: 90px;
    padding: 16px 8px;
    font-size: 50px;
    border: .5px solid white;
    background-color: aqua;
}
.buttons
/* whole of the number grid */
{

    display: grid;
    border-bottom: 1px solid white;
    border-left: 1px solid white;
    grid-template-columns: 1fr 1fr 1fr 1fr;
}
/* for applying an extra layer of borders on to the numbers div */
.buttons > div{
    border-bottom: 1px solid white;
    border-left: 1px solid white;
}
.button
/* individual buttons*/
{
    border: .5px solid white;
    line-height: 100px;
    text-align:center;
    font-size: 25px;
    cursor: pointer;
}
.optr
{
    background-color: black;
    color: white;
}
#clear
/* The clear/all clear button */
{
    background-color: red;
    color: wheat;
}
#bckspc
{
    background-color: greenyellow;
    color: black;
}
#equal
{
    background-color: skyblue;
    color: white;
}
.button:hover
/* hover element on the buttons with class attributes*/
{
    background-color: black;
    color: white;
    transition: .5s ease-in-out;
}
.optr:hover
{
    background-color: gray;
    color: black;
    transition: 0.5s ease-in-out;
}