<div class="cp_iptxt">
  <label class="ef">
  <input type="text" placeholder="お名前">
  </label>
</div>
<div class="cp_iptxt">
  <label class="ef">
  <input type="text" placeholder="E-Mail">
  </label>
</div>

.cp_iptxt {
  position: relative;
  width: 100%;
  margin: 40px 0;
}
.cp_iptxt input[type='text'] {
  font: 15px/1.6 sans-serif;
  box-sizing: border-box;
  width: 100%;
  padding: 0.3em;
  color: #aaaaaa;
  border: 1px solid #1b2538;
  border-radius: 4px;
  transition: 0.3s;
}
.ef input[type='text']:focus {
  border: 1px solid #da3c41;
  box-shadow: 0 0 5px 1px rgba(218,60,65, .5);
  outline: none;
}