/* MATERIAL DESIGN BASE RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

body {
  background: #f5f5f5;
  color: #222;
  line-height: 1.6;
}

img {
  width: 100%;
  display: block;
  border-radius: 10px;
}

section {
  padding: 60px 8%;
}

h1, h2, h3 {
  font-weight: 700;
  margin-bottom: 15px;
}

/* FLEX UTILS */
.flex {
  display: flex;
  align-items: center;
}

.center {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* MATERIAL RIPPLE EFFECT */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: rgba(255,255,255,0.5);
  animation: ripple 0.6s linear;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}