Ion Checkbox closing line

Hi everyone,

I have 2 problems in my ionic project.

1-) Checkbox close the line below as you can see in screen shot

2-) If i use following css code for android, my back button doesnt work in android.
ion-title {
position: absolute;
top: 0;
left: 0;
padding: 0 90px 1px;
width: 100%;
height: 100%;
text-align: center;

Can somebody help me ?