/* Reset some default styles */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* flex style */
.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.center {
  justify-content: center;
  align-items: center;
}

.jsb {
  justify-content: space-between;
}
.jsa{
  justify-content: space-around;
}
.jc {
  justify-content: center;
}

.ac {
  align-items: center;
}

.flex1 {
  flex: 1;
}
/* color style */
.c-ff{
  color: #fff;
}
.c-ef{
  color: #efefef;
}
.c-33{
  color: #333;
}
/* background style */
.bg-ff{
  background-color: #fff;
}
.bg-ef{
  background-color: #efefef;
}
.bg-33{
  background-color: #333;
}
/* font style */
.fz-12{
  font-size: 12px;
}  
.fz-14{
  font-size: 14px;
}
.fz-16{
  font-size: 16px;
}
.fz-18{
  font-size: 18px;
}
.fz-20{
  font-size: 20px;
}
.fz-24{
  font-size: 24px;
}
.fz-28{
  font-size: 28px;
}
.fz-32{
  font-size: 32px;
}
.fz-36{
  font-size: 36px;
}
.fz-40{
  font-size: 40px;
}
/* border style */
.b-1{
  border: 1px solid;
}
.b-2{
  border: 2px solid;
}
.b-3{
  border: 3px solid;
}
.bc-ff{
  border-color: #fff;
}
.bc-ef{
  border-color: #efefef;
}
.bc-33{
  border-color: #333;
}
/* margin style */
.mg-auto{
  margin: auto;
}
.margin-0-10{
  margin: 0 10px;
}

/* height style */
.h-200px{
  height: 200px;
}