* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: black;
}

body {
  font: normal 16px/1.5 Helvetica, sans-serif;
  background: linear-gradient(to right, #6814cd 0%, #3163f3 100%);
}

.tabs-container {
  max-width: 1000px;
  margin: 50px auto;
  padding: 25px;
}

.tabs {
  display: flex;
}

.tabs li:not(:last-child) {
  margin-right: 7px;
}

.tabs li a {
  display: block;
  position: relative;
  top: 4px;
  padding: 10px 25px;
  border-radius: 2px 2px 0 0;
  background: white;
  opacity: 0.7;
  transition: all 0.1s ease-in-out;
}

.tabs li.active a,
.tabs li a:hover {
  opacity: 1;
  top: 0;
}

.tabs-content {
  position: relative;
  z-index: 2;
  padding: 25px;
  border-radius: 0 4px 4px 4px;
  background: white;
}

.tabs-panel {
  display: none;
}

.tabs-panel.active {
  display: block;
}

.tabs-panel p + div {
  margin-top: 15px;
}

@media screen and (max-width: 600px) {
  .tabs {
    flex-direction: column;
  }

  .tabs li {
    width: 100%;
  }

  .tabs li:not(:last-child) {
    margin-right: 0;
  }

  .tabs li a {
    border-radius: 0;
    opacity: 1;
    top: 0;
  }

  .tabs li.active a::before {
    content: "•";
    padding-right: 5px;
  }

  .tabs-content {
    border-radius: 0;
  }
}