#c_slider {
  width: 100%;
  max-width: 1366px;
  position: relative;
}

#c_slider #slider {
  display: flex;
  width: 400%;
}

#c_slider #slider section {
  position: relative;
  width: 100%;
}

#c_slider #slider section img {
  padding: 0;
  display: block;
  width: 100%;
  height: 100%;
  z-index: -1;
}

#c_slider #slider section h4 {
  color: azure;
  margin: auto;
  text-align: center;
  z-index: 1;
  position: absolute;
  display: none;
  box-sizing: border-box;
  font-size: 3.5em;
  padding: 1em;
}

@media all and (max-width: 1200px) {
  #c_slider #slider section h4 {
    font-size: 2.8em;
    padding: 0.9em;
  }
}

@media all and (max-width: 900px) {
  #c_slider #slider section h4 {
    font-size: 2em;
    padding: 0.9em;
  }
}

@media all and (max-width: 768px) {
  #c_slider #slider section h4 {
    font-size: 1.5em;
    padding: 0.8em;
  }
}

@media all and (max-width: 480px) {
  #c_slider #slider section h4 {
    font-size: 1.3em;
    padding: 0.7em;
  }
}

#c_slider #slider #slider1 h4 {
  top: 20%;
  left: 5%;
  color: #222;
  width: 50%;
}

#c_slider #slider #slider2 h4 {
  top: 25%;
  right: 5%;
  width: 30%;
  color: #111DF0;
}

#c_slider #slider #slider3 h4 {
  bottom: 10%;
  left: 3%;
  width: 50%;
  color: forestgreen;
}

#c_slider #slider #slider4 h4 {
  bottom: 10%;
  width: 100%;
  background-color: rgba(221, 221, 221, 0.8);
  color: #118DF0;
  font-size: 2.5em;
}

@media all and (max-width: 1200px) {
  #c_slider #slider #slider4 h4 {
    font-size: 2em;
    padding: 0.9em;
  }
}

@media all and (max-width: 900px) {
  #c_slider #slider #slider4 h4 {
    font-size: 1.8em;
    padding: 0.9em;
  }
}

@media all and (max-width: 768px) {
  #c_slider #slider #slider4 h4 {
    font-size: 1.5em;
    padding: 0.8em;
  }
}

@media all and (max-width: 480px) {
  #c_slider #slider #slider4 h4 {
    font-size: 1.3em;
    padding: 0.7em;
  }
}

#c_slider #btn_ant, #c_slider #btn_sig {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  line-height: 40px;
  font-size: 22px;
  font-weight: bold;
  text-align: center;
  border-radius: 50%;
  cursor: pointer;
  font-family: monospace;
  z-index: 2;
}

#c_slider #btn_ant:hover, #c_slider #btn_sig:hover {
  background-color: white;
}

#c_slider #btn_ant {
  left: 10px;
}

#c_slider #btn_sig {
  right: 10px;
}