*,
::before,
::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
}
body {
  font-family: Arial, Helvetica, sans-serif;
  background: #424141;
}
nav {
  background: #f2f2f2;
  padding: 10px;
  text-align: center;
  position: fixed;
  width: 100%;
}
nav a {
  text-decoration: none;
  font-size: 26px;
  text-shadow: 1px 1px 1px #777;
  margin: 0 10px;
  color: #111;
}
.main-content {
  display: flex;
  padding: 60px 20px 0;
}
.items-container {
  flex-shrink: 0;
  padding: 10px;
  width: 300px;
  background: #f1f1f1;
  border-radius: 3px;
  margin: 10px;
  cursor: move;
  align-self: flex-start;
}
.top-container {
  display: flex;
  justify-content: space-between;
}
.top-container button,
li button {
  align-self: center;
  border-radius: 5px;
  width: 20px;
  height: 20px;
  border: none;
  background: #e23c5d;
  color: #fff;
  font-size: 12px;
  cursor: pointer;
}
.item {
  padding: 15px 5px;
  margin: 10px 0;
  background: #f8f8f8;
  box-shadow: 0 4px 1px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* width: 100%; */
}
.item p {
  width: 92%;
}
.add-item-btn,
.add-container-btn {
  display: inline-block;
  width: 100%;
  padding: 10px 0;
  margin-top: 20px;
  font-size: 16px;
}
form {
  display: none;
  padding: 5px;
  position: relative;
}
.top-form-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.main-content form label {
  display: block;
  font-size: 18px;
  margin: 10px 0;
}
.main-content form input {
  display: block;
  width: 100%;
  padding: 5px;
  font-size: 16px;
}
.validation-msg {
  display: block;
  color: crimson;
  font-size: 16px;
  padding: 5px 0;
}
.close-form-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 25px;
  height: 25px;
}
button[type="submit"] {
  display: inline-block;
  width: 100%;
  padding: 10px 0;
  margin-top: 5px;
  cursor: pointer;
}

/* Add New Container */
.add-new-container {
  flex-shrink: 0;
  padding: 10px;
  width: 300px;
  background: #f1f1f1;
  border-radius: 3px;
  margin: 10px;
  cursor: pointer;
  align-self: flex-start;
}
.add-container-btn {
  margin-top: 5px;
  width: 100%;
}

@media screen and (max-width: 992px) {
  .main-content {
    flex-direction: column;
  }
  .items-container,
  .add-new-container {
    align-self: center;
    width: 500px;
  }
}
@media screen and (max-width: 576px) {
  .items-container,
  .add-new-container {
    align-self: center;
    width: 350px;
  }
}
@media screen and (max-width: 370px) {
  .items-container,
  .add-new-container {
    align-self: center;
    width: 300px;
  }
}