* {margin: 0; padding: 0; font-family: sans-serif; font-weight: 400;} 
/*font set to san-serif, close to apple font San Francisco*/

/*Starting with header and logo/icons present on page*/
div.logo-row {
    display: block;
    border-bottom: 1px solid #d3d6da;
    width: 100%;
    text-align: center;
    position: relative;
}
/*icon and logo section.*/
img.icon {
    display: inline-block;
    height: 30px;
    width: 30px;
    margin: 0px auto;
    position: absolute;
}
img#menu {
    left: 20px;
    top: 10px;
}
img#question {
    right: 85px;
    top: 10px;
}
img#chart {
    right: 45px;
    top: 10px;
}
img#gear {
    right: 5px;
    top: 10px;
}
img.logo {
    display: inline-block;
    height: 50px;
    width: 150px;
    right: 50vh;
    margin: 0px auto;
}
/*Main grid section starts:
5 columns with 6 rows*/
div.main-content {
    height: 200px;
    width: 200px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(6, 1fr);  
    grid-gap: 3px;
    margin: 200px auto;
    align-items: center;
    justify-content: center;
}
div.main-content div {
    border: 2px solid #d3d6da;
    height: 50px;
    width: 50px;
}
/*Lower keyboard section starts:
keyboard grid row 1 here, 10 buttons total.*/
div.keyboard-container {
    margin: 20px auto;
    border: 1px solid transparent;
}
div.keyboard-content-1 {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-template-rows: 1;
    height: 50px;
    width: 300px;
    margin-top: 200px;
    margin-left: auto;
    margin-right: auto;
    align-items: center;
    justify-content: center;
    text-align: center;
    vertical-align: middle;
    line-height: 50px;
    grid-row-gap: 2px;
    grid-column-gap: 8px;
}
/*keyboard grid row 2 here, 9 buttons total.*/
div.keyboard-content-2 {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: 1;
    height: 50px;
    width: 300px;
    margin: 10px auto;
    align-items: center;
    justify-content: center;
    text-align: center;
    vertical-align: middle;
    line-height: 50px;
    grid-row-gap: 7px;
    grid-column-gap: 8px;
}
/*keyboard grid row 3 here, 9 buttons total with larger ENTER and BACKSPACE keys here.*/
div.keyboard-content-3 {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-template-rows: 1;
    height: 50px;
    width: 300px;
    margin: 10px auto;
    align-items: center;
    justify-content: center;
    text-align: center;
    vertical-align: middle;
    line-height: 50px;
    grid-row-gap: 7px;
    grid-column-gap: 8px;
}
/*Styling for all keyboard keys specifically*/
div.keyboard-content-1 div, div.keyboard-content-2 div, div.keyboard-content-3 div {
    border: 2px solid #d3d6da;
    border-radius: 5px;
    background-color: #d3d6da;
    height: 50px;
    width: 45px;
}
/*Enter and backspace keys, backspace is an img*/
div#enterKey {
    font-size: 10pt;
    width: 90px;
}
div#backspaceKey {
    line-height: 58px;
    width: 90px;
}
div#backspaceKey img {
    height: 22px;
    width: 22px;
}