style.css

body {
  font-family: "Helvetica-Neue", Ultra;
  font-size: 16px;
  background: linear-gradient(to left, #00d2ff, #3a7bd5);
  width: 80%;
  margin-left: 1rem;
}

.form-control {
  margin-bottom: 1rem;
}

#wrapper {
  background: white;
  border-radius: 5px;
  width: 25rem;
  padding: 1.2rem;
  position: relative;
}
.otstup {
  margin-bottom: 20px;
}

.box {
  background-color: rgb(211, 211, 211);
  color: rgb(31, 34, 26);
  border-radius: 5px;
  padding: 20px;
  font-size: 150%;
  text-align: center;
  vertical-align: middle;
}

.wrapper {
  width: 50px;
  display: grid;
  grid-gap: 5px;
}

h1 {
  font-size: 30px;
  color: #fff;
  text-transform: uppercase;
  font-weight: 300;
  text-align: center;
  margin-bottom: 15px;
}
table {
  width: 100%;
  table-layout: fixed;
}
.tbl-header {
  background-color: rgba(255, 255, 255, 0.3);
}
.tbl-content {
  height: 300px;
  overflow-x: auto;
  margin-top: 0px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}
th {
  padding: 20px 15px;
  text-align: left;
  font-weight: 500;
  font-size: 12px;
  color: black;
  text-transform: uppercase;
}
td {
  padding: 15px;
  text-align: left;
  vertical-align: middle;
  font-weight: 300;
  font-size: 12px;
  color: black;
  border-bottom: solid 1px rgba(255, 255, 255, 0.1);
}

.close {
  display: none;
}

.open {
  display: block;
}