style.css

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  box-sizing: border-box;
  -webkit-overflow-scrolling: touch;
}

html {
  position: absolute;
  top: 0;
  left: 0;
  padding: 0;
  overflow: auto;
}

body {
  padding: 1rem;
  overflow: auto;
}

.grid-container {
  height: calc(100vh - 200px);
  max-width: 1400px;
  margin: auto;
}

.color-picker-container {
  display: flex;
  align-items: center;
  margin: 5px 0;
}
.color-picker-container > div {
  margin-right: 5px;
}

.color-picker-container > div:first-child {
  border: 2px solid grey;
}

.form-wrap {
  display: flex;
  border: 4px solid grey;
  border-radius: 5px;
  margin: 10px auto;
  max-width: 800px;
}
.form-wrap > form {
  padding: 10px;
}

.form-wrap > form:first-child {
  flex: 1;
}

.form-wrap > form:nth-of-type(2) {
  flex: 1;
}

.form-wrap > form button {
  display: block;
  margin-left: auto;
}

input[type="radio"] {
  margin-right: 5px;
}

input[type="radio"] + label {
  margin-right: 5px;
}