body {
  background: #080808;
  user-select: none;
}

#sec, #dot, #m_sec {
  color: white;
  font-family: 'Russo One', sans-serif;
  font-size: 30vw;
  text-align: center;
  margin-block-start: 0em;
  margin-block-end: 0em;
}

#sec {
  float: left;
  margin-left: 15%;
}

#dot {
  float: left;
  position: absolute;
  right: 40%;
}

#m_sec {
  float: right;
  margin-right: 15%;
}

#start {
  width: 100%;
  height: 80vh;
}

#add {
  clear: both;
  height: 20vh;
  text-align : center;
}

img {
  height: 15vh;
  margin: auto;
}