/* Views filter form css */
.views-group-box div.date-views-filter-fieldset {
  margin-left: 0;
}
.views-group-box fieldset.date-views-filter-fieldset {
  padding-top: 0;
}
.date-views-filter-wrapper {
  min-width: 250px;
}
.date-views-filter input {
  float: left !important; /* LTR */
  margin-right: 2px !important; /* LTR */
  min-width: 12em;
  padding: 0 !important;
  width: 12em;
}

/**
 * Style Header
 */
/* Give the navigation bar a little extra padding below so it will clear the new contextual links overlay of the teasers below it. */
.date-nav {
  clear: both;
  padding-bottom: 1.5em;
  width: 100%;
}
.date-nav div.date-heading h3 {
  margin: 0;
  padding: 0;
}

.date-nav-wrapper .clear-block {
  margin-bottom: 10px;
}

.date-nav-wrapper  {
  position: relative;
  margin-top: 5px;
  width: 100%;
}

.date-nav-wrapper .date-nav {
  background-color: transparent;
  border: 0px;
  height: 30px;
  height: auto;
  min-height: 30px;
  position: relative;
  margin-bottom: 10px;
}

.date-nav-wrapper .date-prev a,
.date-nav-wrapper .date-next a {
  text-decoration: none;
  color: inherit;
  font-size: 12px;
}

.date-nav-wrapper.date-nav a:hover {
  text-decoration: underline;
}

.date-nav-wrapper .date-prev {
  padding: 5px 0;
  position: absolute;
  left: 0px;
  text-align: left;
  top: 0px;
  width: auto;
  z-index: 1;
  font-size: 12px;
}

.date-nav-wrapper .date-prev {
  left: 0;
  right: auto;
}

.date-nav-wrapper .date-prev a {
  margin-left: 10px;
  font-weight: bold;
}

.date-nav-wrapper .date-heading {
  position: relative;
  width: 100%;
  top: 0px;
  text-align: center;
  z-index: 0;
}

.date-nav-wrapper .date-heading h3 {
  line-height: 30px;
  font-size: 1.7em;
}

.date-nav-wrapper .date-next {
  padding: 5px 0;
  position: absolute;
  right: 0px;
  text-align: right;
  top: 0px;
  width: auto;
  z-index: 1;
  font-size: 12px;
}

.date-nav-wrapper .date-next a {
  margin-right: 10px;
  font-weight: bold;
}

File

core/modules/date/css/date-views.css