* {
    margin:0;
    padding:0;
    box-sizing: border-box;
    font-family: "Calibri", sans-serif;
}

html, body {
    height:100%;
    display:flex;
    justify-content:center;
    align-items:center;
    
    
}

h1 {
    font-size:50px;
    position:relative;
}

h2 {
    font-size:30px;
}

p {
    font-size:20px;
}

.blink {
  animation: blinker 1s step-start infinite;
}

@keyframes blinker {
  50% {
    opacity: 0;
  }
}


/* Fake browser popup */



.container {
    border: 3px solid #f1f1f1;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.top {
    padding: 20px;
    background: #3ab3ff;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.content {
    padding: 10px;
}