/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}

/* CSS Reset */

#change{
    display: grid;
    width: 250px;
    height: 500px;
    justify-content: center;
    background-color: rgb(24, 24, 24);
    margin: auto;
    padding: 15px 10px 5px 10px;
}

input{
    background-color: rgb(60, 60, 60);
    color: whitesmoke;
    width: 50px;
    height: 50px;
    font-size: 18px;
}

#answer{
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    grid-row: 1/2;
    grid-column: 1/5;
    width: 247.2px;
    height: 50px;
    margin: none;
    padding: none;
    border: none;
    font-size: 23px;
    background-color: rgb(90, 90, 90);
}

#clear{
    grid-row: 2/3;
    grid-column: 1/5;
    width: 247.2px;
    height: 50px;
}

#back{
    grid-row: 3/4;
    grid-column: 1/4;
    width: 180px;
}

.numbers{
    grid-row: 4/7;
    grid-column: 1/4;
    display: grid;
}

#num1{
    grid-row: 1/2;
    grid-column: 1/2;
}

#num2{
    grid-row: 1/2;
    grid-column: 2/3;
}

#num3{
    grid-row: 1/2;
    grid-column: 3/4;
}

#num4{
    grid-row: 2/3;
    grid-column: 1/2;
}

#num5{
    grid-row: 2/3;
    grid-column: 2/3;
}

#num6{
    grid-row: 2/3;
    grid-column: 3/4;
}

#num7{
    grid-row: 3/4;
    grid-column: 1/2;
}

#num8{
    grid-row: 3/4;
    grid-column: 2/3;
}

#num9{
    grid-row: 3/4;
    grid-column: 3/4;
}

#num0{
    grid-row: 7/8;
    grid-column: 2/3;
}

#posNeg{
    grid-row: 7/8;
    grid-column: 1/2;
}

#dot{
    grid-row: 7/8;
    grid-column: 3/4;
}

#equal{
    grid-row: 7/8;
    grid-column: 4/5;
    background-color: rgb(162, 0, 0);
}

#add{
    grid-row: 6/7;
    grid-column: 4/5;
}

#sub{
    grid-row: 5/6;
    grid-column: 4/5;
}

#mult{
    grid-row: 4/5;
    grid-column: 4/5;
}

#div{
    grid-row: 3/4;
    grid-column: 4/5;
}

#equal{
    grid-row: 7/8;
    grid-column: 4/5;
}