Provides between the text content and my footer bar - html

Question

I am going to make so that you can turn things up on the website like facebook, but this is how I have come into problems with my text content and my footer bar where it just gives some air in between these two.
Html here:
<div class="statusOpslag">
<asp:TextBox ID="TextBoxStatusTekst" CssClass="statusTekst" runat="server" TextMode="MultiLine"></asp:TextBox>
<div class="Statusfooter">
<asp:Button ID="ButtonSend" OnClick="ButtonSend_Click" runat="server" Text="Slå op" CssClass="statusKlikButtonOUT" />
</div>
</div>
CSS here
.statusOpslag {
background: #ffffff;
margin-bottom: 30px;
margin-top: 0;
margin: 10px;
padding: 0;
width: 95%;
}
.statusTekst {
width: 100%;
overflow: hidden;
word-wrap: break-word;
height: 120px;
max-height: 120px;
margin:0;
}
.Statusfooter {
background: #F4F4F4;
padding: 15px;
margin:0px;
}
.statusKlikButtonOUT {
background-color: #5cb85c;
border: 0;
color: green;
}
You can see it problems here
EIDT CSS
I have done as you have described in your answer and it helps nothing. - sorry
.statusOpslag {
background: #ffffff;
padding: 0;
margin: 0;
}
.statusTekst {
width: 100%;
overflow: hidden;
word-wrap: break-word;
height: 120px;
max-height: 120px;
margin:0;
}
.Statusfooter {
background: #F4F4F4;
padding: 15px;
margin:0px;
}
.statusKlikButtonOUT {
background-color: #5cb85c;
border: 0;
color: green;
}

Answer 1

Get rid of all the margins you set. Then, add this in css:
*{
margin: 0:
padding: 0:
}
Once it's set, you don't need to set
margin: 0;
No where again.
Also, in your statusOpslog class you set margin twice:
margin: 10px;
margin-bottom: 30px;
You should only set it once.
If you do not want that margin you got in your question you should not set margin at all for that element.