* {
    border: 0;
    margin: 0;
    padding: 0;
    outline: 0;
    outline-offset: 0;
    box-sizing: border-box;
    
    font-family: Arial,Verdana,Helvetica,sans-serif;
      
}

:active, :hover, :focus {
    outline: 0;
    outline-offset: 0;
}

html, body, .tb, .tc {
    width: 100vw;
    height: 100vh;
}

body {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    text-align: center;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: #333;
}

p {
    margin-bottom: 10px;
}

.tb {
    display: table;
}

.tc {
    display: table-cell;
    vertical-align: middle;
}

img {
    margin: 50px auto;
    width: 100%;
    height: auto;
    max-width: 300px;
}