.container{
    display: grid;
    grid-template-columns: [first] 20% [second] auto [third] 20% [forth last];
    grid-template-rows: [first] 15% [second] 10% [third] auto [forth] 15% [fifth last];
    width: 99%;
    min-height: 100vh;
    margin: auto;
    font-family: Arial;
}

.header{
    grid-column-start: first;
    grid-column-end: last;
    grid-row-start: first;
    grid-row-end: second;
    background-color: grey;
    list-style-type:none
}

.navigation{
    grid-column-start: first;
    grid-column-end: last;
    grid-row-start: second;
    grid-row-end: third;
    background-color: gray;
    display: flex;
    justify-content: space-around;
    font-size: 28px;
}
	
.navigation a{
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: gray;
    color: lightgray;
    text-decoration: none;
    width: 100%;
}
.navigation a:hover{
    background-color: lightgray;
    color: white;
}


.left{
    grid-column-start: first;
    grid-column-end: second;
    grid-row-start: third;
    grid-row-end: forth;
    background-color: lightgray;
}

.middle{
    grid-column-start: second;
    grid-column-end: third;
    grid-row-start: third;
    grid-row-end: forth;
    text-align: center;
    list-style-type:none
}

.heading{
    text-align: left;
    font-size: 20px;
    color: #736d7a;
    font-weight: bold;
    padding: 10px;
}

.box{
    height: 200px;
    width: 80%;
    text-transform: uppercase;
}

.right{
    grid-column-start: third;
    grid-column-end: last;
    grid-row-start: third;
    grid-row-end: forth;
    background-color: lightgray;
}

.footer{
    grid-column-start: first;
    grid-column-end: last;
    grid-row-start: forth;
    grid-row-end: last;
    background-color: gray;
}