app.css

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  display: block;
}
body {
  line-height: 1;
}
ol,
ul {
  list-style: none;
}
blockquote,
q {
  quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}

body {
  padding: 30px;
  margin: 0;
  box-sizing: border-box;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  background-color: rgb(245, 245, 245);
}

header {
  background-color: rgb(245, 245, 245);
  text-align: center;
  font-size: 24px;
  font-weight: 200;
  margin-bottom: 0.5rem;
  color: rgb(200, 200, 200);
}

#app {
  font-size: 16px;
  width: 96%;
  box-sizing: border-box;
  max-width: 660px;
  min-width: 260px;
  margin: 0 auto;
  color: #333333;
}

#card {
  background-color: #ffffff;
  box-shadow: 1px 1px 5px rgba(200, 200, 200, 0.6);
}

h2 {
  font-size: 1.1rem;
  font-weight: bold;
}

a {
  color: #333333;
  text-decoration: none;
}

a:hover {
  cursor: pointer;
}

p {
  margin-top: 1rem;
}

.p--small {
  font-size: 12px;
  color: #888888;
}

.p--centered {
  text-align: center;
}

.input__text {
  width: 100%;
  outline: none;
  font-size: 20px;
  line-height: 40px;
  padding: 10px 10px;
  box-sizing: border-box;
  margin: 0;
  border: none;
  border-bottom: 1px solid rgb(245, 245, 245);
}

.lists__container {
  display: block;
}

.list {
  flex: 1;
}

.list--completed {
  margin-top: 1rem;
}

.list__item {
  position: relative;
  width: 100%;
  display: flex;
  font-size: 20px;
  padding: 5px 10px;
  line-height: 40px;
  box-sizing: border-box;
  border-bottom: 1px solid rgb(245, 245, 245);
}

.list__item:hover {
  cursor: pointer;
  background-color: rgb(250, 250, 250);
}

.list__item:hover .list__item__text {
  text-decoration-line: line-through;
}

.list__item--done .list__item__text {
  opacity: 0.4;
  text-decoration-line: line-through;
}

.link__delete {
  display: block;
  margin-left: auto;
  text-align: center;
  text-decoration-line: none;
  color: rgba(172, 41, 0, 0.5);
  font-size: 30px;
  line-height: 40px;
  margin-top: -2px;
}

.link__delete:hover {
  color: rgb(172, 41, 0);
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 0 10px;
}

.footer__active {
  line-height: 36px;
}

.footer__completed {
  line-height: 36px;
  opacity: 0.4;
}

.footer__completed:hover {
  opacity: 1;
}

@media screen and (min-width: 800px) {
  header {
    font-size: 4vw;
  }

  .lists__container {
    display: flex;
  }

  .list__item:hover .link__delete {
    display: block;
  }

  .link__delete {
    display: none;
  }
}

@media (pointer: coarse) {
  .list__item .link__delete {
    display: block;
    color: rgb(172, 41, 0);
  }
}