html,
body {
    height: 100%;
    width: 100%;
    margin: 0;
}

.main {
    height: 100%;
    width: 100%;
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: 100px 1fr 50px;
}

.header {
    border: 1px solid black;
    grid-area: 1/1/2/3;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo{
    width: 50px;
    height: 50px;
    display: flex;
    margin: 25px;
    justify-content: center;
    align-items: center;
}

.heading{
    font-size: 50px;
}

.login{
    width: 50px;
    height: 50px;
    margin: 50px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content {
    grid-area: 2/2/3/3;
    margin: 10px;
    border: 1px solid black;
}

.sidebar {
    grid-area: 2/1/3/2;
    margin: 10px;
    border: 1px solid black;
}

.footer {
    grid-area: 3/1/4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid black;
}